ammend comment

Author: smithto1

pandas/core/groupby/generic.py

@@ -1828,7 +1828,7 @@ def count(self):
  # return zero, rather than the default of NaN which the reindexing in
  # _wrap_agged_blocks() returns. We set self.observed=True for the call to
  # _wrap_agged_blocks() to avoid it reindexing. We then reindex below with
- # fill_value=0. See GH 35028
+ # fill_value=0. See GH #35028
  with com.temp_setattr(self, "observed", True):
  result = self._wrap_agged_blocks(blocks, items=data.items)