docs: update namespace table of contents

[stdlib-bot]

This PR

• updates namespace table of contents

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
ndarray	$\color{red}190335/361522$ $\color{green}+52.65%$	$\color{red}2128/2170$ $\color{green}+98.06%$	$\color{red}47/1847$ $\color{green}+2.54%$	$\color{red}190335/361522$ $\color{green}+52.65%$

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