gnu: Fix input typoes.

* gnu/packages/emulators.scm (nestopia-ue)[inputs]: Move ',' to its
operand.
* gnu/packages/gstreamer.scm (gst-plugins-bad)[inputs]: Same.

gnu/packages/emulators.scm

@@ -1358,7 +1358,7 @@ towards a working Mupen64Plus for casual users.")
      (list autoconf autoconf-archive automake pkg-config))
     (inputs
      `(("fltk" ,fltk)
-       ("fontconfig", fontconfig)
+       ("fontconfig" ,fontconfig)
        ("libarchive" ,libarchive)
        ("libepoxy" ,libepoxy)
        ("libxft" ,libxft)

gnu/packages/gstreamer.scm

@@ -892,7 +892,7 @@ model to base your own plug-in on, here it is.")
        ("transcode" ,transcode)
        ("usrsctp" ,usrsctp)
        ("v4l" ,v4l-utils)
-       ("voaacenc", vo-aacenc)
+       ("voaacenc" ,vo-aacenc)
        ("voamrwbenc" ,vo-amrwbenc)
        ("vulkan-headers" ,vulkan-headers)
        ("vulkan-loader" ,vulkan-loader)