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
blas/base/ccopy	$\color{green}454/454$ $\color{green}+100.00\%$	$\color{green}17/17$ $\color{green}+100.00\%$	$\color{green}4/4$ $\color{green}+100.00\%$	$\color{green}454/454$ $\color{green}+100.00\%$
blas/sswap	$\color{green}116/116$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}116/116$ $\color{green}+100.00\%$
iter/strided-by	$\color{green}292/292$ $\color{green}+100.00\%$	$\color{green}48/48$ $\color{green}+100.00\%$	$\color{green}4/4$ $\color{green}+100.00\%$	$\color{green}292/292$ $\color{green}+100.00\%$
ndarray/ndarraylike2ndarray	$\color{green}143/143$ $\color{green}+100.00\%$	$\color{red}7/8$ $\color{green}+87.50\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}143/143$ $\color{green}+100.00\%$
strided/base/reinterpret-complex64	$\color{green}99/99$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}99/99$ $\color{green}+100.00\%$
string/base/invcase	$\color{green}278/278$ $\color{green}+100.00\%$	$\color{green}11/11$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}278/278$ $\color{green}+100.00\%$
string/base/remove-first	$\color{green}96/96$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}96/96$ $\color{green}+100.00\%$

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