Update the status of the maybe_expr in the docs to "approved"

[dszoboszlay]

Minor fix in the documentation.

(I submitted this first as part of #8625 but after the decision to not implement EEP 70 as an experimental feature it can be broken out to its own PR.)

[github-actions[bot]]

CT Test Results

  1 files   11 suites   4m 6s :stopwatch:  93 tests  91 :white_check_mark: 2 :zzz: 0 :x: 109 runs  107 :white_check_mark: 2 :zzz: 0 :x:

Results for commit 22065dd1.

:recycle: This comment has been updated with latest results.

To speed up review, make sure that you have read Contributing to Erlang/OTP and that all checks pass.

See the TESTING and DEVELOPMENT HowTo guides for details about how to run test locally.

Artifacts

• Complete CT logs (Download Logs)
• HTML Documentation (Download HTML Docs)
• Windows Installer

// Erlang/OTP Github Action Bot

[jhogberg]

Merged, thanks for the PR!