fix : Update workflow reference from tf-pr-checks to tf-diff-checks

Author: dverma-cd

docs/tf-pr-checks.md

@@ -25,12 +25,12 @@ on:
 
 jobs:
   complete-example:
-    uses: clouddrove/github-shared-workflows/.github/workflows/tf-pr-checks.yaml@v2
+    uses: clouddrove/github-shared-workflows/.github/workflows/tf-diff-checks.yml@v2
     with:
       provider: 'azurerm'
       terraform_directory: 'examples/complete'
       target_branch: 'master'
     secrets:
       AZURE_CREDENTIALS: ${{ secrets.AZURE_CREDENTIALS }}
       ARM_SUBSCRIPTION_ID: ${{ secrets.ARM_SUBSCRIPTION_ID }}
-```
+```