[MINOR][PYTHON][DOCS] Fix a typo in pyspark documentation

### What changes were proposed in this pull request?

This PR aims to fix a minor typo in PySpark documentation.

### Why are the changes needed?

...

### Does this PR introduce any user-facing change?

No.

### How was this patch tested?

Pass Github Actions

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #50492 from kirisakow/patch-20250402-fix-typo-in-pyspark-doc.

Authored-by: Kiril Isakov <[email protected]>
Signed-off-by: Ruifeng Zheng <[email protected]>

Author: kirisakow

python/pyspark/sql/dataframe.py

@@ -5935,7 +5935,7 @@ def drop(self, *cols: "ColumnOrName") -> "DataFrame":
 
     @dispatch_df_method
     def toDF(self, *cols: str) -> "DataFrame":
-        """Returns a new :class:`DataFrame` that with new specified column names
+        """Returns a new :class:`DataFrame` with new specified column names
 
         .. versionadded:: 1.6.0