Fix: corrected wording and outdated links in docs example

[IlmaxRehman]

Summary

This PR fixes several documentation issues including typos, HTML markup errors, and outdated links across the Typer repository.

Changes

Typo Fixes

• README.md and docs/index.md: Changed "the final users" to "end users" for better clarity
• docs/management-tasks.md: Changed "final users" to "end users" and improved sentence structure

HTML Fixes

• README.md and docs/index.md: Added missing closing </a> tag for the coverage badge link to fix HTML structure

Link Updates

• typer/_typing.py: Updated PEP 586 link from outdated www.python.org/dev/peps/pep-0586 to current format peps.python.org/pep-0586/
• README.md, docs/index.md, and typer-cli/README.md: Updated GitHub Actions badge URLs from /workflows/ to /actions/workflows/ format for modern GitHub badge URLs

Files Changed

• typer/README.md
• typer/docs/index.md
• typer/docs/management-tasks.md
• typer/typer/_typing.py
• typer/typer-cli/README.md

Testing

• All changes are documentation-only
• No linting errors introduced
• Links verified to use current URL formats

Impact

• Improves documentation clarity
• Fixes HTML markup issues
• Ensures all external links use current, working URLs
• No breaking changes

[github-actions]

📝 Docs preview

Last commit fb35b82 at: https://00e49e92.typertiangolo.pages.dev

Modified Pages

• https://00e49e92.typertiangolo.pages.dev/ - (before)
• https://00e49e92.typertiangolo.pages.dev/management-tasks/ - (before)