Various changes:

- Some KRs for Geo added.
- Use blockquotes in Critical acclaim
- Advise to use format `Owner:` to define a Key Result that is
  countable per Owner (each Owner should have max 9 KRs)

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After the handbook was split into smaller pages by https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/4939 many of the old links needed updating

Updated applications page

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