ref-manual: Updated EXTRA_IMAGE_FEATURES variable

Added better wording to show that you use spaces to separate
multiple features.

(From yocto-docs rev: b21d73acb23e0e3b78cff332fdc4a09166eb7392)

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

1 files changed, 6 insertions, 1 deletions

diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index fac6d9046b..131babf4bf 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -3652,7 +3652,12 @@
             <glossdef>
                 <para role="glossdeffirst">
 <!--                <para role="glossdeffirst"><imagedata fileref="figures/define-generic.png" /> -->
-                    The list of additional features to include in an image.
+                    A list of additional features to include in an image.
+                    When listing more than one feature, separate them with
+                    a space.
+                </para>
+
+                <para>
                     Typically, you configure this variable in your
                     <filename>local.conf</filename> file, which is found in the
                     <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>.