Merge branch 'doc/autoscaler-doc-improvements-5' into 'main'

Remove "Autoscaler algorithm and parameters" from the GitLab Runner instance group autoscaler page

See merge request gitlab-org/gitlab-runner!5517



Merged-by: Lorena Ciutacu <lciutacu@gitlab.com>
Approved-by: Justin Farmiloe <jfarmiloe@gitlab.com>
Approved-by: Lorena Ciutacu <lciutacu@gitlab.com>
Reviewed-by: Lorena Ciutacu <lciutacu@gitlab.com>
Co-authored-by: Roshni Sarangadharan <rsarangadharan@gitlab.com>