Update README.md

Author: josemoracard

README.md

@@ -6,7 +6,7 @@
 *Estas instrucciones [están disponibles en 🇪🇸 español](https://github.com/4GeeksAcademy/master-javascript-programming-exercises/blob/main/README.es.md) :es:*
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-### 160 exercises about JavaScript.
+### 160 exercises about JavaScript
 
 Complete selection of auto-graded and interactive JavaScript exercises, where you will start practicing the writing of actual code and learn many of the most popular JavaScript methods!