[8.x] [Serverless bug bash] Fixes link ref on Install Elastic Defend page (backport #6164)#6208

natasha-moore-elastic merged 2 commits into8.xelastic/security-docs:8.xfrom

mergify/bp/8.x/pr-6164elastic/security-docs:mergify/bp/8.x/pr-6164Copy head branch name to clipboard