ref-manual: Added cross-reference phrase to some variables

Fixes [YOCTO #8233]

The IMAGE_POSTPROCESS_COMMAND and IMAGE_PREPROCESS_COMMAND
variables were missing a linked cross-reference to the
IMAGE_ROOTFS variable.  I added the linked references.

(From yocto-docs rev: a36b447ca105b3d63b7cfd085c77b071275e0dab)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 4c4fc22717..5bb1b7eaa8 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -5532,6 +5532,9 @@
                     within the function, you can use
                     <filename>${IMAGE_ROOTFS}</filename>, which points to
                     the directory that becomes the root filesystem image.
+                    See the
+                    <link linkend='var-IMAGE_ROOTFS'><filename>IMAGE_ROOTFS</filename></link>
+                    variable for more information.
                 </para>
             </glossdef>
         </glossentry>
@@ -5557,6 +5560,9 @@
                     within the function, you can use
                     <filename>${IMAGE_ROOTFS}</filename>, which points to
                     the directory that becomes the root filesystem image.
+                    See the
+                    <link linkend='var-IMAGE_ROOTFS'><filename>IMAGE_ROOTFS</filename></link>
+                    variable for more information.
                 </para>
             </glossdef>
         </glossentry>