ref-manual: Edits to packageinfo class.

(From yocto-docs rev: ab28f1f9596b1defbf4dd1ae8ad3b90304e8260d)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/ref-manual/ref-classes.xml

@@ -1923,7 +1923,7 @@
     <title><filename>packageinfo.bbclass</filename></title>
 
     <para>
-        The package information (<filename>packageinfo</filename>) class
+        The <filename>packageinfo</filename> class
         gives a BitBake user interface the ability to retrieve information
         about output packages from the <filename>pkgdata</filename> files.
     </para>