add word counter project link to index.md

@kshitija-2001, Links don't have spaces. 
The correct link is ```https://github.com/Ayushparikh-code/Web-dev-mini-projects/tree/main/word%20counter```
Please be careful the next time. This time I have changed it.

Author: harshita2216

Index.md

@@ -75,4 +75,4 @@
 | [Online quiz portal](https://github.com/Ayushparikh-code/Web-dev-mini-projects/tree/main/online%20quiz%20portal)                           | An online portal in which an individual can attend the quiz and view the result automatically |
 | [Virtual Keyboard](https://github.com/Ayushparikh-code/Web-dev-mini-projects/tree/main/Virtual%20Keyboard) | This is a keyboard on the screen with all the components and a display. |
 | [Tindog](https://github.com/Ayushparikh-code/Web-dev-mini-projects/tree/main/Tindog)                           | Tinder customized for dogs to find their mate online |
-| [Word counter App](https://github.com/Ayushparikh-code/Web-dev-mini-projects/tree/main/word counter)                                 | Simple Word counter App written in HTML, CSS, and JavaScript                                                                 
+| [Word counter App](https://github.com/Ayushparikh-code/Web-dev-mini-projects/tree/main/word%20counter)           | Simple Word counter App written in HTML, CSS, and JavaScript