.pullapprove.yml: Shift always_pending under group_defaults

The main example has it outside [1], but it's a group setting [1], so
we can move it inside for consistency [2].

[1]: http://docs.pullapprove.com/
[2]: http://docs.pullapprove.com/pr-settings/group_defaults/

Signed-off-by: W. Trevor King <[email protected]>

Author: wking

.pullapprove.yml

@@ -4,10 +4,6 @@ requirements:
   signed_off_by:
     required: true
 
-always_pending:
-  title_regex: ^WIP
-  explanation: 'Work in progress...'
-
 group_defaults:
   required: 2
   approve_by_comment:
@@ -18,6 +14,9 @@ group_defaults:
     enabled: true
   author_approval:
     ignored: true
+  always_pending:
+    title_regex: ^WIP
+    explanation: 'Work in progress...'
   conditions:
     branches:
       - master