Fix FeatureGroup docstring (#5028)

Co-authored-by: pintaoz <[email protected]>

Author: pintaoz-aws

Diff for: src/sagemaker/feature_store/feature_group.py

@@ -631,7 +631,7 @@ def __str__(self) -> str:
 class FeatureGroup:
     """FeatureGroup definition.
 
-    This class instantiates a FeatureGroup object that comprises of a name for the FeatureGroup,
+    This class instantiates a FeatureGroup object that comprises a name for the FeatureGroup,
     session instance, and a list of feature definition objects i.e., FeatureDefinition.
 
     Attributes: