doc changes

Author: antdjohns

polygon/rest/snapshot.py

@@ -145,10 +145,9 @@ def list_snapshot_options_chain(
         options: Optional[RequestOptionBuilder] = None,
     ) -> Union[List[OptionContractSnapshot], HTTPResponse]:
         """
-        Get the snapshot of an option contract for a stock equity.
+        Get the snapshot of all options contracts for an underlying ticker.
 
         :param underlying_asset: The underlying ticker symbol of the option contract.
-        :param option_contract: The option contract identifier.
         :return: List of Snapshots
         """
         url = f"/v3/snapshot/options/{underlying_asset}"