Update README.md

This should be the final README file. Check the update section for the new implementations.

README.md

@@ -72,6 +72,8 @@ Bug fixes and UI enhancements for a smoother user experience.
 
 It now has a new section called questions.
 
+It now has two default groups called Students and Instructors.
+
 It now has a new feature that allows instructors to receive a notification when a student posts in the question section.
 
 In addition, students can assign priority labels to their posts, and faculties can deal with the posts based on priorities. They can also filter the posts that have not been resolved.
@@ -80,7 +82,8 @@ To install the updated feature, run nodebb normal setup with:
 ```sh
 ./nodebb setup
 ./nodebb build
-'''
+```
+If some of the features are not installed properly, you may have to flush your database and reinstall Nodebb. Make sure to save a copy of the current database data before processing.
 ## License
 
 NodeBB is licensed under the **GNU General Public License v3 (GPL-3)** (http://www.gnu.org/copyleft/gpl.html).