Update README.md

README.md

@@ -47,8 +47,10 @@ tokenizer = AutoTokenizer.from_pretrained("nlpaueb/sec-bert-base")
 model = AutoModel.from_pretrained("nlpaueb/sec-bert-base")
 ```
 
+## Pre-process Text
+
 In order to use SEC-BERT-NUM, you have to pre-process texts replacing every numerical token with [NUM] pseudo-token.
-Below there is an example how you can pre-process a simple sentence. This approach is quite simple, feel free to modify it as you see fit.
+Below there is an example of how you can pre-process a simple sentence. This approach is quite simple, feel free to modify it as you see fit.
 
 ```python
 import re