minor fix in _build_docstring()

Author: craigbarratt

custom_components/pyscript/stubs/generator.py

@@ -393,7 +393,7 @@ def _name(self, identifier: str, ctx: ast.expr_context | None = None) -> ast.exp
 
     def _build_docstring(self, description: str | None, fields: list[_ServiceField]) -> str | None:
         docstring = description.strip() if description else ""
-        docstring.replace("\n", f"\n{_DOCSTRING_INDENT}")
+        docstring = docstring.replace("\n", f"\n{_DOCSTRING_INDENT}")
         first_arg = True
         for field in fields:
             if not field.description: