Add text similarity models to compatible NLP models (#2548) (#2549)

(cherry picked from commit 96f6c88)

Co-authored-by: David Kyle <[email protected]>

docs/en/stack/ml/nlp/ml-nlp-model-ref.asciidoc

@@ -145,6 +145,11 @@ Using `DPREncoderWrapper`:
 * https://huggingface.co/ProsusAI/finbert[FinBERT]
 * https://huggingface.co/cardiffnlp/twitter-roberta-base-sentiment[Twitter roBERTa base for Sentiment Analysis]
 
+[discrete]
+[[ml-nlp-model-ref-text-similarity]]
+== Third party text similarity models
+* https://huggingface.co/cross-encoder/ms-marco-TinyBERT-L-2-v2[ms marco TinyBERT L2 v2]
+* https://huggingface.co/cross-encoder/ms-marco-MiniLM-L-6-v2[ms marco MiniLM L6 v2]
 
 [discrete]
 [[ml-nlp-model-ref-zero-shot]]