Skip resolving for pydantic model fields

docs/utils.py

@@ -94,6 +94,10 @@ def linkcode_resolve(repo_link: str, domain: str, info: dict[str, str]) -> str |
 
         pos = _global_assign_pos(source, symbol_name)
         if pos is None:
+            if symbol_name in ("model_config", "model_fields"):
+                # These are ClassVars added by pydantic.
+                # Since they're not in our source code, we cannot resolve them to a url.
+                return None
             raise Exception(f"Could not find symbol `{symbol_name}` in {module.__name__}.")
 
         start, end = pos