website: Update Doxygen links for hotfix

Updating the Doxygen links for the v20.1.0.1 hot-fix.

Change-Id: I2f1106326c8d49827d4c63f6f0ad5f2a66e429a5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/37121
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
1 file changed