Update model metadata to set pipeline tag to the new `text-ranking` (#3)

- Update model metadata to set pipeline tag to the new `text-ranking` (e67f55e980021ebde4340f56d2f23c9241393431)


Co-authored-by: Tom Aarsen <[email protected]>

README.md

@@ -7,7 +7,7 @@ metrics:
 - accuracy
 base_model:
 - BAAI/bge-reranker-v2-m3
-pipeline_tag: text-classification
+pipeline_tag: text-ranking
 library_name: sentence-transformers
 ---