Removed www from url, there is no www in the dns

The url is unreachable, since there is no www.nlp.town in the dns. Some browsers remove this automatically, but

README.md

@@ -48,6 +48,6 @@ The finetuned model obtained the following accuracy on 5,000 held-out product re
 
 ## Contact 
 
-In addition to this model, [NLP Town](https://www.nlp.town) offers custom, monolingual sentiment models for many languages and an improved multilingual model through [RapidAPI](https://rapidapi.com/nlp-town-nlp-town-default/api/multilingual-sentiment-analysis2/). 
+In addition to this model, [NLP Town](https://nlp.town) offers custom, monolingual sentiment models for many languages and an improved multilingual model through [RapidAPI](https://rapidapi.com/nlp-town-nlp-town-default/api/multilingual-sentiment-analysis2/). 
 
 Feel free to contact us for questions, feedback and/or requests for similar models.