ref-manual: Edits to packagegroup class.

Had to also fix a couple links in the "migration" chapter due
to the section heading of the packagegroup.bbclass section
changing.

(From yocto-docs rev: 412b8325a13e5bf31d057efb5f6dbb54f8a1aba0)

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

1 files changed, 6 insertions, 3 deletions

diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 19660dee10..00706e5386 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1896,23 +1896,26 @@
 </section>
 
 <section id='ref-classes-packagegroup'>
-    <title>Package Groups - <filename>packagegroup.bbclass</filename></title>
+    <title><filename>packagegroup.bbclass</filename></title>
 
     <para>
-        This class sets default values appropriate for package group recipes (e.g.
+        The <filename>packagegroup</filename> class sets default values
+        appropriate for package group recipes (e.g.
         <filename><link linkend='var-PACKAGES'>PACKAGES</link></filename>,
         <filename><link linkend='var-PACKAGE_ARCH'>PACKAGE_ARCH</link></filename>,
         <filename><link linkend='var-ALLOW_EMPTY'>ALLOW_EMPTY</link></filename>,
         and so forth).
         It is highly recommended that all package group recipes inherit this class.
     </para>
+
     <para>
         For information on how to use this class, see the
         "<ulink url='&YOCTO_DOCS_DEV_URL;#usingpoky-extend-customimage-customtasks'>Customizing Images Using Custom Package Groups</ulink>"
         section in the Yocto Project Development Manual.
     </para>
+
     <para>
-        Previously, this class was named <filename>task.bbclass</filename>.
+        Previously, this class was called the <filename>task</filename> class.
     </para>
 </section>