docs: Small link fixes

[simitt]

No description provided.

[ghost]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2022-08-03T05:55:08.505+0000

• Duration: 7 min 58 sec

Test stats 🧪

Test	Results
Failed	0
Passed	98
Skipped	32
Total	130

🤖 GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)