style: use upper case imperative in docstring

influxdb_client/client/write/point.py:255 in public method `__eq__`:
        D400: First line should end with a period (not 'f')
influxdb_client/client/write/point.py:255 in public method `__eq__`:
        D401: First line should be in imperative mood (perhaps 'Return', not 'returns')
influxdb_client/client/write/point.py:255 in public method `__eq__`:
        D403: First word of the first line should be properly capitalized ('Returns', not 'returns')

Author: hf-kklein

influxdb_client/client/write/point.py

@@ -252,7 +252,7 @@ def __str__(self):
         return self.to_line_protocol()
 
     def __eq__(self, other):
-        """returns true iff other is equal to self"""
+        """Return true iff other is equal to self."""
         if not isinstance(other, Point):
             return False
         # assume points are equal iff their instance fields are equal