docs: update REPL namespace documentation

[stdlib-bot]

This PR

• updates the REPL namespace documentation

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
repl	$\color{red}12138/15031$ $\color{green}+80.75\%$	$\color{red}721/969$ $\color{green}+74.41\%$	$\color{red}161/281$ $\color{green}+57.30\%$	$\color{red}12138/15031$ $\color{green}+80.75\%$
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.