fix failing doctest

tusharsadhwani · tusharsadhwani · commit 2562a2c61231 · 2023-11-15T00:40:31.000+05:30
diff --git a/frontmatter/default_handlers.py b/frontmatter/default_handlers.py
@@ -317,6 +317,8 @@ def export(self, metadata: dict[str, object], **kwargs: object) -> str:
         return u(metadata_str)
 
 
+_TOMLHandler.__name__ = "TOMLHandler"
+
 if toml:
     TOMLHandler: Type[_TOMLHandler] | None = _TOMLHandler
 else:
