Update CONTRIBUTING.md

Author: div-bargali

CONTRIBUTING.md

@@ -23,7 +23,7 @@ Contribute to this project, whether it's:
 * Fork the repo and clone it on your machine.
 * Add a upstream link to main branch in your cloned repo
  ```
- git remote add upstream 
+ git remote add upstream https://github.com/div-bargali/Data-Structures-and-Algorithms.git 
  ```
 * Keep your cloned repo upto date by pulling from upstream (this will also avoid any merge conflicts while committing new changes)
  ```