website: Update broken link in reporting_problems.md

Change-Id: Ib07592a79e78d779da3a87703f9883184e70c30e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/38875
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: Jason Lowe-Power <power.jg@gmail.com>
diff --git a/_pages/documentation/reporting_problems.md b/_pages/documentation/reporting_problems.md
index 0a37cea..f1c7903 100644
--- a/_pages/documentation/reporting_problems.md
+++ b/_pages/documentation/reporting_problems.md
@@ -72,7 +72,7 @@
 about your solution as a follow-up (either in the mailing list or in the Jira
 Issue tracking system). If you have fixed a bug, we'd appreciate if you could
 submit the fix to the gem5 source. Please see our
-[beginners guide to contributing](/documentation/contributing_beginners_guide)
+[beginners guide to contributing](/contributing)
 on how to do this.
 
 If your issue is with the content of a gem5 document/tutorial being incorrect,