Fix UTF-8 usage in raw README.md

Make changes from UTF-8 code to symbol itself

Co-authored-by: Lyndon White <[email protected]>

Author: SambhawDrag

README.md

@@ -366,11 +366,11 @@ julia> para = spm("Julia is a high-level, high-performance dynamic language for
 Indices is usually used for deep learning models.
 Index of special tokens in ALBERT are given below:
 
-1 ⇒ [PAD]  
-2 ⇒ [UNK]  
-3 ⇒ [CLS]  
-4 ⇒ [SEP]  
-5 ⇒ [MASK]  
+1 ⇒ [PAD]  
+2 ⇒ [UNK]  
+3 ⇒ [CLS]  
+4 ⇒ [SEP]  
+5 ⇒ [MASK]  
 
 
 ```julia