Fix, fix not run format tool when not install toml pkg

Author: so1n

protobuf_to_pydantic/util.py

@@ -137,10 +137,10 @@ def format_content(content_str: str, pyproject_file_path: str = "") -> str:
                 "The toml module is not installed and the configuration information cannot be obtained through"
                 " pyproject.toml"
             )
-            return content_str
-    pyproject_content = get_pyproject_content(pyproject_file_path)
-    if pyproject_content:
-        pyproject_dict = toml.loads(pyproject_content)
+        else:
+            pyproject_content = get_pyproject_content(pyproject_file_path)
+            if pyproject_content:
+                pyproject_dict = toml.loads(pyproject_content)
     try:
         p2p_format_dict: dict = pyproject_dict["tool"]["protobuf-to-pydantic"]["format"]
     except KeyError: