[README] Update metabug status

- METABUG is already fixed so redirect to the List of opened ONLINE tickets
- Update description accordingly
- Use just "projects/ONLINE" to not point to a particular ISSUE.

Co-authored-by: Víctor Martínez Calvo <[email protected]>

Author: vicmarcal

README.md

@@ -21,7 +21,7 @@ Website Subsystems written in PHP (such as GetBuilds, RosLogin, Testman, etc.) a
    *NOTE* - When working on the style it might be needed to use `hugo server --disableFastRender` instead. 
 
 ## Contributing
-1. Choose one of the tasks from: [METABUG - New ReactOS Website Tasks before it can go live](https://jira.reactos.org/browse/ONLINE-815)
+1. Choose an ONLINE task from ReactOS JIRA related to Hugo website:(https://jira.reactos.org/projects/ONLINE)
 2. Comment on Jira that you want to work on this feature (to prevent duplication of work).
 3. Create a pull request here.