docs: update related packages sections

[stdlib-bot]

This PR

• updates the related packages section of READMEs to include links to related packages.

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
ndarray/falses	$\color{green}199/199$ $\color{green}+100.00%$	$\color{green}29/29$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}199/199$ $\color{green}+100.00%$
random/array/laplace	$\color{green}212/212$ $\color{green}+100.00%$	$\color{green}3/3$ $\color{green}+100.00%$	$\color{green}0/0$ $\color{green}+100.00%$	$\color{green}212/212$ $\color{green}+100.00%$
random/poisson	$\color{green}215/215$ $\color{green}+100.00%$	$\color{green}3/3$ $\color{green}+100.00%$	$\color{green}0/0$ $\color{green}+100.00%$	$\color{green}215/215$ $\color{green}+100.00%$
random/strided/rayleigh	$\color{green}181/181$ $\color{green}+100.00%$	$\color{green}3/3$ $\color{green}+100.00%$	$\color{green}0/0$ $\color{green}+100.00%$	$\color{green}181/181$ $\color{green}+100.00%$

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