Update challenge_13.md

Author: shivaylamba

Challenges/challenge_13.md

@@ -7,4 +7,4 @@ Today's challenge involves how to use ``git stash`` command effectively. You can
 Task: 
 1. Inside the branch you created in the previous challenge ``your-username-details`` create a new file inside the ``contributors/<YOUR-GITHUB_USERNAME>/`` directory.
 2. Use the git stash command to move these changes to the stash area
-3. Remove the content from the stash area and share a screenshot of this inside the Github issue you created in the first challenge
+3. Delete the content from the stash area and share a screenshot of this inside the Github issue you created in the first challenge