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	$\\color{green}95/95$ $\\color{green}+0.00\\%$	$\\color{green}7/7$ $\\color{green}+0.00\\%$	$\\color{green}1/1$ $\\color{green}+0.00\\%$	$\\color{green}95/95$ $\\color{green}+0.00\\%$
repl/help	$\\color{green}95/95$ $\\color{green}+0.00\\%$	$\\color{green}7/7$ $\\color{green}+0.00\\%$	$\\color{green}1/1$ $\\color{green}+0.00\\%$	$\\color{green}95/95$ $\\color{green}+0.00\\%$
repl/info	$\\color{green}95/95$ $\\color{green}+0.00\\%$	$\\color{green}7/7$ $\\color{green}+0.00\\%$	$\\color{green}1/1$ $\\color{green}+0.00\\%$	$\\color{green}95/95$ $\\color{green}+0.00\\%$
repl/signature	$\\color{green}99/99$ $\\color{green}+0.00\\%$	$\\color{green}10/10$ $\\color{green}+0.00\\%$	$\\color{green}1/1$ $\\color{green}+0.00\\%$	$\\color{green}99/99$ $\\color{green}+0.00\\%$
repl/typed-signature	$\\color{green}99/99$ $\\color{green}+0.00\\%$	$\\color{green}10/10$ $\\color{green}+0.00\\%$	$\\color{green}1/1$ $\\color{green}+0.00\\%$	$\\color{green}99/99$ $\\color{green}+0.00\\%$

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