Merge branch 'wiki-sidebar-text-alignment' into 'master'

Wiki sidebar: Text alignment and spacing fixes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/170560



Merged-by: Himanshu Kapoor <info@fleon.org>
Approved-by: Himanshu Kapoor <info@fleon.org>
Co-authored-by: Sascha Eggenberger <seggenberger@gitlab.com>