Remove ref option from checkout step

Removed the ref option from the checkout step.

Signed-off-by: Manas Manohar <[email protected]>

Author: manasmanohar

.github/workflows/prettify_code.yml

@@ -14,7 +14,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: ${{ github.head_ref }}
           fetch-depth: 0
 
       - name: Prettify code
@@ -24,4 +23,4 @@ jobs:
           prettier_version: 2.8.8
           prettier_options: --write **/*.{js,md}
           same_commit: true
-          
+