Backport of fixed typos in API landing page into stable-website

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #14690 to be assessed for backporting due to the inclusion of the label type/docs-cherrypick.

WARNING automatic cherry-pick of commits failed. Commits will require human attention.

merge conflict error: unable to process merge commit: "ca461a1b2dccb555067f8afaff4c54aac177389a", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Description

This PR fixes typos on the API landing page

PR Checklist

• [ ] updated test coverage
• [X] external facing docs updated
• [X] not a security concern

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Overview of commits

• ca461a1b2dccb555067f8afaff4c54aac177389a

[hashicorp-cla]

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9 out of 10 committers have signed the CLA.

• [x] hc-github-team-consul-core
• [x] nathancoleman
• [x] david-yu
• [x] trujillo-adam
• [x] boruszak
• [x] Jeff-Apple
• [x] jkirschner-hashicorp
• [x] BRKalow
• [x] blake
• [ ] temp

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