PYTHON-1086 - Fix find_one documentation

Author: behackett

doc/api/pymongo/collection.rst

@@ -45,7 +45,7 @@
  .. automethod:: delete_many
  .. automethod:: aggregate
  .. automethod:: find(filter=None, projection=None, skip=0, limit=0, no_cursor_timeout=False, cursor_type=CursorType.NON_TAILABLE, sort=None, allow_partial_results=False, oplog_replay=False, modifiers=None, manipulate=True)
- .. automethod:: find_one(filter_or_id=None, *args, **kwargs)
+ .. automethod:: find_one(filter=None, *args, **kwargs)
  .. automethod:: find_one_and_delete
  .. automethod:: find_one_and_replace(filter, replacement, projection=None, sort=None, return_document=ReturnDocument.BEFORE, **kwargs)
  .. automethod:: find_one_and_update(filter, update, projection=None, sort=None, return_document=ReturnDocument.BEFORE, **kwargs)