format mergeable.yml

.github/mergeable.yml

@@ -7,20 +7,20 @@ mergeable:
         validate:
           - do: description
             must_include:
-            regex: '#skip-changelog'
+              regex: "#skip-changelog"
           - do: and
             validate:
               - do: dependent
                 changed:
-                file: 'src/**'
-                required: ['CHANGELOG.md']
+                  file: "src/**"
+                  required: ["CHANGELOG.md"]
               - do: dependent
                 changed:
-                file: 'deltachat-ffi/src/**'
-                required: ['CHANGELOG.md']
+                  file: "deltachat-ffi/src/**"
+                  required: ["CHANGELOG.md"]
     fail:
       - do: checks
-        status: 'action_required' 
+        status: "action_required"
         payload:
           title: Changelog might need an update
           summary: "Check if CHANGELOG.md needs an update or add #skip-changelog to the PR description."