Fix link to arxiv in README.md

The link is sending to "https://arxiv.org/abs/2211.15199%5D" which doesn't exist. I suggest a fix in the markdown for the link.

README.md

@@ -5,6 +5,6 @@ NOTE: This model was only trained with sequences of up to 128 tokens.
 
 When using AlephBertGimmel, please reference:
 
-Eylon Guetta, Avi Shmidman, Shaltiel Shmidman, Cheyn Shmuel Shmidman, Joshua Guedalia, Moshe Koppel, Dan Bareket, Amit Seker and Reut Tsarfaty, "Large Pre-Trained Models with Extra-Large Vocabularies: A Contrastive Analysis of Hebrew BERT Models and a New One to Outperform Them All", Nov 2022 [http://arxiv.org/abs/2211.15199]
+Eylon Guetta, Avi Shmidman, Shaltiel Shmidman, Cheyn Shmuel Shmidman, Joshua Guedalia, Moshe Koppel, Dan Bareket, Amit Seker and Reut Tsarfaty, "Large Pre-Trained Models with Extra-Large Vocabularies: A Contrastive Analysis of Hebrew BERT Models and a New One to Outperform Them All", Nov 2022 [arXiv:2211.15199](http://arxiv.org/abs/2211.15199)