[v3-1-test] Improve insert content when generate docker file (#60393) (#60397)

(cherry picked from commit fd90666)

Co-authored-by: Tuan Hoang Minh <9130269+tuanhm2911@users.noreply.github.com>

Author: 2 people

scripts/ci/prek/inline_scripts_in_docker.py

@@ -35,7 +35,7 @@ def insert_content(file_path: Path, content: list[str], header: str, footer: str
             replacing = False
         if not replacing:
             result.append(line)
-        file_path.write_text("".join(result))
+    file_path.write_text("".join(result))
 
 
 if __name__ == "__main__":