[SPARK-48638][FOLLOW][CONNECT] Fix documentation for ExecutionInfo

### What changes were proposed in this pull request?
A previous renaming of the method and class names left the documentation out of sync. This patch fixes this.

### Why are the changes needed?
Consistency.

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
Existing tests.

### Was this patch authored or co-authored using generative AI tooling?
No

Closes #47829 from grundprinzip/SPARK-48638-v2.

Authored-by: Martin Grund <martin.grund@databricks.com>
Signed-off-by: Martin Grund <martin.grund@databricks.com>

python/pyspark/sql/dataframe.py

@@ -6326,9 +6326,9 @@ def toPandas(self) -> "PandasDataFrameLike":
     @property
     def executionInfo(self) -> Optional["ExecutionInfo"]:
         """
-        Returns a QueryExecution object after the query was executed.
+        Returns a ExecutionInfo object after the query was executed.
 
-        The queryExecution method allows to introspect information about the actual
+        The executionInfo method allows to introspect information about the actual
         query execution after the successful execution. Accessing this member before
         the query execution will return None.
 
@@ -6339,7 +6339,7 @@ def executionInfo(self) -> Optional["ExecutionInfo"]:
 
         Returns
         -------
-        An instance of QueryExecution or None when the value is not set yet.
+        An instance of ExecutionInfo or None when the value is not set yet.
 
         Notes
         -----

python/pyspark/sql/metrics.py

@@ -269,7 +269,7 @@ def toDot(self, filename: Optional[str] = None, out_format: str = "png") -> "gra
 
 
 class ExecutionInfo:
-    """The query execution class allows users to inspect the query execution of this particular
+    """The ExecutionInfo class allows users to inspect the query execution of this particular
     data frame. This value is only set in the data frame if it was executed."""
 
     def __init__(