adapters doc: fix incorrect reference to `.AdapterHTTPError`
@@ -139,7 +139,7 @@ class BaseAdapter(abc.ABC):
This method should not raise any exceptions other than these:
- - :class:`geopy.exc.AdapterHTTPError` should be raised if the response
+ - :class:`geopy.adapters.AdapterHTTPError` should be raised if the response
was successfully retrieved but the status code was non-successful.
- :class:`geopy.exc.GeocoderTimedOut` should be raised when the request
times out.
