Update mkdocs.yml to fix link problem#252

chrisb13 wants to merge 3 commits intomainACCESS-NRI/access-esm1.6-configs:mainfrom

250_cb-fix_link_on_landing_pageACCESS-NRI/access-esm1.6-configs:250_cb-fix_link_on_landing_pageCopy head branch name to clipboard