website: Add missing slash in permalink for ARM impl page

Related issue: https://gem5.atlassian.net/browse/GEM5-381

This page's permalink does not have a forward slash ending its
permalink, while the other pages that link correctly do end with a
forward slash. This likely is the cause for the page not linking
correctly on the static website.

Change-Id: I6471a1035b7d77f8435da4988806529e2b4a3c2a
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/26143
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