Fixes #4771 Add 1.4.x example of registered var properties to the docsite

docsite/rst/playbooks_variables.rst

@@ -144,16 +144,21 @@ The following tasks are illustrative of how filters can be used with conditional
       - debug: msg="it failed"
         when: result|failed
 
-      # in most cases you'll want a handler, but if you want to do something right now, this is nice
-      - debug: msg="it changed"
-        when: result|changed
-
       - debug: msg="it succeeded"
         when: result|success
 
       - debug: msg="it was skipped"
         when: result|skipped
 
+      # in most cases you'll want a handler, but if you want to do something right now, this is nice
+      - debug: msg="it changed"
+        when: result|changed
+
+      # in 1.4 and above, properties of registered variables can be called as well;
+      # eliminating the need to use filters in some cases.
+      - debug: msg="it changed"
+        when: result.changed
+
 .. _forcing_variables_to_be_defined:
 
 Forcing Variables To Be Defined