Update escapes

Author: vjpai

.github/mergeable.yml

@@ -8,11 +8,11 @@ mergeable:
         - or:
           - and:
             - must_include:
-                regex: 'release notes: yes'
-                message: 'Please add the label **release notes: yes**'
+                regex: '^release notes: yes'
+                message: 'Please add the label (release notes: yes)'
             - must_include:
                 regex: '^lang\/'
-                message: 'Please add a language label **(lang/...)**'
+                message: 'Please add a language label (lang/...)'
           - must_include:
-              regex: 'release notes: no'
-              message: 'Please add the label **release notes: no**'
+              regex: '^release notes: no'
+              message: 'Please add the label (release notes: no)'