docs: update REPL namespace documentation

[stdlib-bot]

This PR

• updates the REPL namespace documentation

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
repl/code-blocks	$\color{green}95/95$ $\color{green}+100.00%$	$\color{green}7/7$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}95/95$ $\color{green}+100.00%$
repl/help	$\color{green}95/95$ $\color{green}+100.00%$	$\color{green}7/7$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}95/95$ $\color{green}+100.00%$

The above coverage report was generated for the changes in this PR.

[stdlib-bot]

PR Commit Message

docs: update REPL namespace documentation

PR-URL: https://github.com/stdlib-js/stdlib/pull/9836

Please review the above commit message and make any necessary adjustments.