Fix typos, logic errors and language

[sau226]

Why:

Typos and unclear language make docs hard to read, logic errors (e.g. commands to "enable" a service, under the "disable" service heading) mean that unexpected system behavior may result.

Happy to open an issue or to remove/separate out elements of this PR if a reviewer feels this is necessary.

What's being changed (if available, include any code snippets, screenshots, or gifs):

PR contains 3 commits, each addressing one issue:

• A typo fix commit identifies several typos in the docs, and changes them
• A logic error commit identifies a logic error (in this case, a command to "enable" system behavior was presented under a heading for "how to disable" said behavior) and adds the correct "disable" command.
• A revision for clarity commit changes the word "delink" to "unlink" in docs which refer to commit linking with users. Delink appears only once in this repo (before the changes I propose to make), while "unlink" appears many more times, including in other docs about linking commits to users - so it would be arguably more consistent with the rest of the docs to make this change.

Check off the following:

• [ ] A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• [ ] The changes in this PR meet the docs fundamentals that are required for all content.
• [ ] All CI checks are passing and the changes look good in the review environment.

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Table of review links

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The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on a staging server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
actions/sharing-automations/reusing-workflows.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13
admin/administering-your-instance/administering-your-instance-from-the-command-line/command-line-utilities.md	ghes@ 3.17 3.16 3.15 3.14 3.13	ghes@ 3.17 3.16 3.15 3.14 3.13
admin/managing-iam/configuring-authentication-for-enterprise-managed-users/configuring-saml-single-sign-on-for-enterprise-managed-users.md	ghec	ghec
admin/managing-iam/understanding-iam-for-enterprises/about-enterprise-managed-users.md	ghec	ghec
billing/managing-billing-for-your-products/managing-billing-for-github-advanced-security/signing-up-for-github-advanced-security.md	fpt ghec	fpt ghec
code-security/dependabot/working-with-dependabot/configuring-access-to-private-registries-for-dependabot.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13
code-security/dependabot/working-with-dependabot/dependabot-options-reference.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13
code-security/securing-your-organization/fixing-security-alerts-at-scale/best-practice-fix-alerts-at-scale.md	fpt ghec	fpt ghec
code-security/security-overview/filtering-alerts-in-security-overview.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13
code-security/security-overview/viewing-security-insights.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13
code-security/trialing-github-advanced-security/explore-trial-code-scanning.md	fpt ghec	fpt ghec
copilot/building-copilot-extensions/building-a-copilot-agent-for-your-copilot-extension/context-passing-for-your-agent.md	fpt ghec	fpt ghec
enterprise-onboarding/feature-enhancements/about-enterprise-security.md	ghec	ghec
repositories/configuring-branches-and-merges-in-your-repository/managing-rulesets/troubleshooting-rules.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13	fpt ghec ghes@ 3.17 3.16 3.15 3.14 3.13

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

🤖 This comment is automatically generated.

[Sharra-writes]

@sau226 Thanks for opening a PR! You've caught a lot of great typos, but some of them I will have to check in about to make sure they aren't language we're using very specifically for one reason or another, even though I can see you've done your research and I really appreciate it. And I have one minor correction: "reusable," without the "e," is the correct spelling. 😆 I had to look it up to make sure I hadn't gone crazy, since the rest of your changes are pretty much spot on.

I'll get this triaged for review and let you know when I've heard back about a couple of these. Again, thank you for the really adept typo wrangling! It's very much appreciated. 💛

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