docs: fix logs persistence walkthrough broken url

[lucianocarvalho]

What

I was reading the Tekton Dashboard installation guide and noticed that the link reference for logs persistence was broken.

Changes

Added the path correctly to walkthrough markdown.

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• Docs included if any changes are user facing
• Tests included if any functionality added or changed
• Follows the commit message standard
• Meets the Tekton contributor standards (including
  functionality, content, code)
• Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• Release notes block below has been updated with any user facing changes (new features, significant UI changes, API changes, bug fixes, changes requiring upgrade notices or deprecation warnings)
• Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

docs: fix logs persistence walkthrough broken url

[linux-foundation-easycla]

• ✅login: lucianocarvalho / (0cc7b72)

The committers listed above are authorized under a signed CLA.

[tekton-robot]

Hi @lucianocarvalho. Thanks for your PR.

I'm waiting for a tektoncd member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[briangleeson]

/ok-to-test

[briangleeson]

/kind documentation

[AlanGreene]

Thanks @lucianocarvalho
/lgtm

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AlanGreene

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