Update clang-format.yml

.github/workflows/clang-format.yml

@@ -7,7 +7,7 @@ on:
         # actions run ID
         description: 'Commit clang-format changes?'
         # Default value if no value is explicitly provided
-        default: false
+        default: 'false'
         # Input has to be provided for the workflow to run
         required: false
 
@@ -23,7 +23,7 @@ jobs:
       with:
         source: './cocos ./extensions'
         exclude: './thidrparty ./extensions/fairygui ./extensions/scripting/lua-bindings/auto ./extensions/spine'
-        extensions: 'h,cpp,c'
+        extensions: 'h,cpp,c,mm'
         clangFormatVersion: 13
         inplace: True
     - name: Commit clang-format changes