Update github_pages.md
Update github_pages.md

Changed wording
ucsb-sbhs-cs/ucsb-sbhs-cs.github.io,ucsb-sbhs-cs/ucsb-sbhs-cs.github.io,ucsb-sbhs-cs/ucsb-sbhs-cs.github.io,ucsb-sbhs-cs/ucsb-sbhs-cs.github.io