Update README.md

README.md

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 # Model card for PM-AI/bi-encoder_msmarco_bert-base_german
 
 ## Model summary
-This models can be used for **semantic search** and **documents retrieval** to find relevant passages based on a query.
+This model can be used for **semantic search** and **documents retrieval** to find relevant passages based on a query.
 It was trained on a machine translated **MSMARCO dataset** for _german_ with **hard negatives** and **Margin MSE loss**.
 Combining these elements results in a SOTA transformer for asymmetric search.
 Details are presented below.