Add notes to see reference-gertty.yaml for more info

Change-Id: Id023c912065a3ffa98744ea61b3b9b77b34c63d1

examples/googlesource-gertty.yaml

@@ -2,7 +2,9 @@
 # Gerrit running on googlesource.com. Most of these options are not
 # required, rather, they customize Gertty to better deal with the
 # particulars of Google's Gerrit configuration.
-# See the reference-gertty.yaml file for more options.
+
+# This file does not list all of the available options.  For a full
+# list with explanations, see the 'reference-gertty.yaml' file.
 
 servers:
   - name: CHANGEME-review

examples/minimal-gertty.yaml

@@ -1,6 +1,9 @@
 # This is an example ~/.gertty.yaml file with only the required
 # settings.
 
+# This file does not list all of the available options.  For a full
+# list with explanations, see the 'reference-gertty.yaml' file.
+
 servers:
   - name: CHANGEME
     url: https://CHANGEME.example.org/

examples/openstack-gertty.yaml

@@ -3,6 +3,9 @@
 # customize Gertty to better deal with the particulars of OpenStack's
 # Gerrit configuration.
 
+# This file does not list all of the available options.  For a full
+# list with explanations, see the 'reference-gertty.yaml' file.
+
 servers:
   - name: openstack
     url: https://review.openstack.org/