Update first-timers.yml

Author: SITADRITA1

.github/first-timers.yml

@@ -1,4 +1,4 @@
-# You can create the issue in a different repo than where the problem is. Just make sure you installed the bot on the configured repository.
+# You can create the issue in a different repo than where the problem is. Just make sure you have installed the bot on the configured repository.
 # The issue will link back to the original repository where the contribution will be made.
 repository: p5.js
 
@@ -11,4 +11,4 @@ labels:
   - hacktoberfest
 
 # If you would like to add your own template for the issue, add an .md file to your .github folder
-# template: .github/first-timers-issue-template.md 
+# template: .github/first-timers-issue-template.md