Correction for docstring for multiclass stat scores tensor validation…

… function (#1862)

src/torchmetrics/functional/classification/stat_scores.py

@@ -254,7 +254,7 @@ def _multiclass_stat_scores_tensor_validation(
 ) -> None:
     """Validate tensor input.
 
-    - if target has one more dimension than preds, then all dimensions except for preds.shape[1] should match
+    - if preds has one more dimension than target, then all dimensions except for preds.shape[1] should match
     exactly. preds.shape[1] should have size equal to number of classes
     - if preds and target have same number of dims, then all dimensions should match
     - if ``multidim_average`` is set to ``samplewise`` preds tensor needs to be atleast 2 dimensional in the