Update ISSUE_GUIDELINES.md (#1762)

Author: pranshugupta54

ISSUE_GUIDELINES.md

@@ -50,7 +50,7 @@ Working on these types of existing issues is a good way of getting started with
 Feature requests are welcome. But take a moment to find out whether your idea fits with the scope and aims of the project. It's up to you to make a strong case to convince the mentors of the merits of this feature. Please provide as much detail and context as possible.
 
 ### Monitoring the Creation of New Issues 
-1. Join our `#talawa-github` slack channel for automatic issue and pull request updates
+1. Join our `#talawa-github` slack channel for automatic issue and pull request updates.
 
 ## General Guidelines