docs(Methoddocs): fixed some issue when generating our autodocs

Author: fubuloubu

src/ape/api/providers.py

@@ -105,7 +105,7 @@ def __repr__(self) -> str:
         return f"<{repr_str}>"
 
     @property
-    def datetime(self) -> datetime.datetime:
+    def datetime(self) -> "datetime.datetime":
         """
         The block timestamp as a datetime object.
         """