Revert commit message changes

This keeps it identical to the commit messages from export_...

app.py

@@ -86,7 +86,7 @@ def export_to_onnx(model_id: str, create_pr: bool, output_model_id: str, token:
 
     model = SentenceTransformer(model_id, backend="onnx")
     
-    commit_message = "Add exported 'model.onnx' compatible with Sentence Transformers"
+    commit_message = "Add exported onnx model 'model.onnx'"
 
     if is_new_model(output_model_id):
         model.push_to_hub(
@@ -331,7 +331,7 @@ def export_to_openvino(model_id: str, create_pr: bool, output_model_id: str, tok
 
     model = SentenceTransformer(model_id, backend="openvino")
 
-    commit_message = "Add exported 'openvino_model.xml' compatible with Sentence Transformers"
+    commit_message = "Add exported openvino model 'openvino_model.xml'"
 
     if is_new_model(output_model_id):
         model.push_to_hub(