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	$591/591$ $+100.00\mathrm{\%}$	$1/1$ $+100.00\mathrm{\%}$	$0/0$ $+100.00\mathrm{\%}$	$591/591$ $+100.00\mathrm{\%}$
ndarray/base/assert	$321/321$ $+100.00\mathrm{\%}$	$1/1$ $+100.00\mathrm{\%}$	$0/0$ $+100.00\mathrm{\%}$	$321/321$ $+100.00\mathrm{\%}$

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