docs: update namespace table of contents

[stdlib-bot]

This PR

• updates namespace table of contents

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[stdlib-bot]

Hello! Thank you for your contribution to stdlib.

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[stdlib-bot]

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[kgryte]

@Planeshifter Looks like we need to either update our automated PRs to include a checkbox or allow for specifying a GitHub account exclusion list.

[kgryte]

@Planeshifter Also, I don't think we want the comment posted every time a commit is made. Instead, it should only happen once.