Add multilingual to the language tag

Hi! A PR to add multilingual to the language tag to improve the referencing.

README.md

@@ -1,21 +1,22 @@
 ---
-language: 
+language:
 - de
 - en
+- multilingual
 license: mit
 tags:
 - sentence_embedding
 - search
-- pytorch 
-- xlm-roberta 
+- pytorch
+- xlm-roberta
 - roberta
 - xlm-r-distilroberta-base-paraphrase-v1
 - paraphrase
 datasets:
 - stsb_multi_mt
 metrics:
-- Spearman’s rank correlation
-- cosine similarity 
+- Spearman�s rank correlation
+- cosine similarity
 ---
 
 # Cross English & German RoBERTa for Sentence Embeddings
@@ -71,7 +72,7 @@ We did an automatic hyperparameter search for 33 trials with [Optuna](https://gi
 The final model was trained with these hyperparameters on the combination of the train and dev datasets from English, German and the crossings of them. The testset was left for testing.
 
 # Evaluation
-The evaluation has been done on English, German and both languages crossed with the STSbenchmark test data. The evaluation-code is available on [Colab](https://colab.research.google.com/drive/1gtGnKq_dYU_sDYqMohTYVMVpxMJjyH0M?usp=sharing). As the metric for evaluation we use the Spearman’s rank correlation between the cosine-similarity of the sentence embeddings and STSbenchmark labels.
+The evaluation has been done on English, German and both languages crossed with the STSbenchmark test data. The evaluation-code is available on [Colab](https://colab.research.google.com/drive/1gtGnKq_dYU_sDYqMohTYVMVpxMJjyH0M?usp=sharing). As the metric for evaluation we use the Spearman�s rank correlation between the cosine-similarity of the sentence embeddings and STSbenchmark labels.
 
 | Model Name                                                    | Spearman<br/>German | Spearman<br/>English | Spearman<br/>EN-DE & DE-EN<br/>(cross) |
 |---------------------------------------------------------------|-------------------|--------------------|------------------|