Modify pre-commit.yml to run end-of-file-fixer on all files

Author: Paulinakhew

.github/workflows/pre-commit.yml

@@ -13,4 +13,4 @@ jobs:
     - uses: actions/setup-python@v2
     - uses: pre-commit/[email protected]
       with:
-        extra_args: end-of-file-fixer
+        extra_args: end-of-file-fixer --all-files