docs: update compact() docstring to include delete files

Author: qzyu999

pyiceberg/table/maintenance.py

@@ -45,7 +45,8 @@ def expire_snapshots(self) -> ExpireSnapshots:
         return ExpireSnapshots(transaction=Transaction(self.tbl, autocommit=True))
 
     def compact(self) -> None:
-        """Compact the table's data files by reading and overwriting the entire table.
+        """Compact the table's data and delete files by reading and overwriting
+        the entire table.
 
         Note: This is a full-table compaction that leverages Arrow for binpacking.
         It currently reads the entire table into memory via `.to_arrow()`.