[docs] Fix doc build error in release-0.288.rst

[steveburnett]

Description

Fixes doc build error

/Users/steveburnett/Documents/GitHub/presto/presto-docs/src/main/sphinx/release/release-0.288.rst:39: WARNING: Inline literal start-string without end-string.

I thought that I had caught this in #23079 but apparently not.

Motivation and Context

Builds on work in #23090, #23033, #22876, and #22985.

Like the doc build errors I fixed in the other PRs, these errors don't stop the build but they're annoying, and these are easy and low-risk fixes.

Impact

Documentation builds.

Test Plan

Local doc builds:

before:
build succeeded, 20 warnings.

after:
build succeeded, 19 warnings.

Reviewed local doc build to confirm the fix didn't break any text display or formatting errors.

Contributor checklist

• Please make sure your submission complies with our development, formatting, commit message, and attribution guidelines.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

== NO RELEASE NOTE ==