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
assert/is-positive-finite	$\color{green}263/263$ $\color{green}+100.00\%$	$\color{green}12/12$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}263/263$ $\color{green}+100.00\%$
constants/float32/sqrt-pi	$\color{green}53/53$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}53/53$ $\color{green}+100.00\%$

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