Fix typo

Author: eaftan

src/dotenv/main.py

@@ -305,7 +305,7 @@ def _is_interactive():
 
 
 def load_dotenv(
-    dotenv_path: Union[str, 'os.PathLike[str]', 's.PathLike[bytes]', None] = None,
+    dotenv_path: Union[str, 'os.PathLike[str]', 'os.PathLike[bytes]', None] = None,
     stream: Optional[IO[str]] = None,
     verbose: bool = False,
     override: bool = False,