doc, gnu, guix: Fix typos.

* doc/guix.texi: Fix various typos and reword a sentence.
* gnu/packages/cpp.scm (cpplint)[description]: Fix typo.
* gnu/packages/dns.scm (ldns): Fix typo in comment.
* gnu/packages/games.scm (yamagi-quake2): Fix typo in comment.
* gnu/packages/qt.scm (python-pyqtwebengine): Fix typo in comment.
* gnu/packages/rails.scm (ruby-autoprefixer-rails): Fix typo in comment.
* gnu/packages/syndication.scm (quiterss)[description]: Fix typo.
* gnu/packages/terminals.scm (kmscon): Fix typo in comment.
* gnu/packages/xml.scm (perl-xml-sax-base)[description]: Fix typo.
  (python-elementpath)[description]: Fix typo.
* guix/build/asdf-build-system.scm (output-translation): Fix typo in docstring.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

doc/guix.texi

@@ -7807,7 +7807,7 @@ MbedTLS package:
 Some older packages that aren't using @file{Package.toml} yet, will require
 this file to be created, too.  The function @code{julia-create-package-toml}
 helps creating the file.  You need to pass the outputs and the source of the
-package, it's name (the same as the @code{file-name} parameter), the package
+package, its name (the same as the @code{file-name} parameter), the package
 uuid, the package version, and a list of dependencies specified by their name
 and their uuid.
 @end defvr
@@ -21755,7 +21755,7 @@ Available @code{getmail-options-configuration} fields are:
 If set to @samp{0}, getmail will only print warnings and errors.  A
 value of @samp{1} means that messages will be printed about retrieving
 and deleting messages.  If set to @samp{2}, getmail will print messages
-about each of it's actions.
+about each of its actions.
 
 Defaults to @samp{1}.
 
@@ -25502,7 +25502,7 @@ directives} for comprehensive documentation on the acceptable
 @deftp {Data type} php-fpm-dynamic-process-manager-configuration
 Data Type for the @code{dynamic} php-fpm process manager.  With the
 @code{dynamic} process manager, spare worker processes are kept around
-based on it's configured limits.
+based on its configured limits.
 @table @asis
 @item @code{max-children} (default: @code{5})
 Maximum of worker processes.
@@ -31570,7 +31570,7 @@ notifications.
 
 The kernel module loader service allows one to load loadable kernel
 modules at boot.  This is especially useful for modules that don't
-autoload and need to be manually loaded, as it's the case with
+autoload and need to be manually loaded, as is the case with
 @code{ddcci}.
 
 @deffn {Scheme Variable} kernel-module-loader-service-type

gnu/packages/cpp.scm

@@ -587,7 +587,7 @@ tools:
     (synopsis "Static code checker for C++")
     (description "@code{cpplint} is a command-line tool to check C/C++ files
 for style issues following Google’s C++ style guide.  While Google maintains
-it's own version of the tool, this is a fork that aims to be more responsive
+its own version of the tool, this is a fork that aims to be more responsive
 and make @code{cpplint} usable in wider contexts.")
     (license license:bsd-3)))
 

gnu/packages/dns.scm

@@ -101,7 +101,7 @@
         (base32 "0ac242n7996fswq1a3nlh1bbbhrsdwsq4mx7xq8ffq6aplb4rj4a"))
        (patches
         (search-patches
-         ;; To create make-flag vairables,
+         ;; To create make-flag variables,
          ;; for splitting installation of drill and examples.
          "ldns-drill-examples.patch"))))
     (build-system gnu-build-system)

gnu/packages/games.scm

@@ -7151,7 +7151,7 @@ some graphical niceities, and numerous bug-fixes and other improvements.")
                (mkdir-p (string-append out "/lib"))
                (mkdir-p (string-append out "/bin"))
                ;; The yamagi-quake2 binary must be in the same directory
-               ;; as it's engine libraries, but symlinking it to /bin is okay
+               ;; as its engine libraries, but symlinking it to /bin is okay.
                ;; https://github.com/yquake2/yquake2/blob/master/stuff/packaging.md
                (copy-recursively "release"
                                  (string-append out "/lib/yamagi-quake2"))

gnu/packages/qt.scm

@@ -2068,7 +2068,7 @@ contain over 620 classes.")
                        "--sipdir" sipdir
                        "--pyqt-sipdir" pyqt-sipdir))))
          ;; Because this has a different prefix than python-pyqt then we need
-         ;; to make this a namespace of it's own
+         ;; to make this a namespace of its own.
          (add-after 'install 'make-namespace
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let* ((__init__.py (string-append

gnu/packages/rails.scm

@@ -142,8 +142,8 @@ API.")
        (modify-phases %standard-phases
          (add-after 'extract-gemspec 'remove-unnecessary-dependencies
            (lambda _
-             ;; Remove the testing of compass, as it's use is deprecated, and
+             ;; Remove the testing of compass, as its use is deprecated, and
-             ;; it's unpackaged for Guix
+             ;; it's unpackaged for Guix.
              (substitute* "autoprefixer-rails.gemspec"
                ((".*%q<compass>.*") "\n")
                (("\"spec/compass_spec\\.rb\"\\.freeze, ") ""))

gnu/packages/syndication.scm

@@ -576,7 +576,7 @@ formats, including all versions of RSS and Atom.")
     (home-page "https://quiterss.org/")
     (synopsis "RSS/Atom news feeds reader written on Qt/C++")
     (description "QuiteRSS is an RSS/Atom news feeds reader written on Qt/C++
-that aims to be quite fast and comfortable to it's user.")
+that aims to be quite fast and comfortable to its user.")
     (license license:gpl3+)))
 
 (define-public gfeeds

gnu/packages/terminals.scm

@@ -326,7 +326,7 @@ compatibility to existing emulators like xterm, gnome-terminal, konsole, etc.")
          ("libxkbcommon" ,libxkbcommon)
          ("logind" ,elogind)
          ;; MESA can be used for accelerated video output via OpenGLESv2, but
-         ;; it's a bit dependency that we'd rather avoid in the installation
+         ;; it's a big dependency that we'd rather avoid in the installation
          ;; image.
          ;; ("mesa" ,mesa)
          ("pango" ,pango)

gnu/packages/xml.scm

@@ -878,7 +878,7 @@ building Perl SAX2 XML parsers, filters, and drivers.")
     (home-page "https://metacpan.org/release/XML-SAX-Base")
     (synopsis "Base class for SAX Drivers and Filters")
     (description "This module has a very simple task - to be a base class for
-PerlSAX drivers and filters.  It's default behaviour is to pass the input
+PerlSAX drivers and filters.  Its default behaviour is to pass the input
 directly to the output unchanged.  It can be useful to use this module as a
 base class so you don't have to, for example, implement the characters()
 callback.")
@@ -2587,7 +2587,7 @@ for Python's ElementTree XML data structures, both for the standard
 ElementTree library and for the @uref{http://lxml.de, lxml.etree} library.
 
 For lxml.etree this package can be useful for providing XPath 2.0 selectors,
-because lxml.etree already has it's own implementation of XPath 1.0.")
+because lxml.etree already has its own implementation of XPath 1.0.")
     (license license:expat)))
 
 (define-public python-lxml

guix/build/asdf-build-system.scm

@@ -72,8 +72,7 @@
 
 (define (output-translation source-path
                             object-output)
-  "Return a translation for the system's source path
+  "Return a translation for the system's source path to its binary output."
-to it's binary output."
   `((,source-path
      :**/ :*.*.*)
     (,(library-directory object-output)