Fix square bracket use flagged by kramdown

What does this MR do?

Fixes a few places where some incorrect formatting got introduced accidentally. All detected due to the use of square brackets that causes a kramdown warning:

From:

• !35178 (merged)
• !34310 (merged)
• !30901 (merged)

 kramdown warning(s) for <Nanoc::Core::CompilationItemRepView item.identifier=/ee/development/geo/framework.md name=default>
   No link definition for link ID 'https://gitlab.com/gitlab-org/gitlab/-/issues/118743' found on line 539
   No link definition for link ID 'https://gitlab.com/gitlab-org/gitlab/-/issues/118745' found on line 540

 kramdown warning(s) for <Nanoc::Core::CompilationItemRepView item.identifier=/ee/topics/autodevops/index.md name=default>
   No link definition for link ID '...' found on line 372

 kramdown warning(s) for <Nanoc::Core::CompilationItemRepView item.identifier=/ee/administration/pages/index.md name=default>
   No link definition for link ID '' found on line 1
   No link definition for link ID ''env'' found on line 1
   No link definition for link ID '' found on line 1
   No link definition for link ID '' found on line 1
   No link definition for link ID '' found on line 1

Related issues

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Review checklist

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