Profiler: fix numRecords docstring return type.

Author: nikie

pydeequ/profiles.py

@@ -273,7 +273,7 @@ def numRecords(self) -> int:
         """
         A getter for the number of records
 
-        :return Optional[int]: number of records
+        :return int: number of records
         """
         return self._numRecords