docs: remove duplicated "the" typos in five articles

[KirtiRamchandani]

Summary

Fix duplicated word typos (the the) in five documentation articles.

Problem

Several pages contain duplicated articles (the the), which reads unprofessional and can confuse readers.

Fix

Replace the the → the in:

• content/authentication/.../authorizing-an-app-for-single-sign-on.md
• content/code-security/.../codeql-query-packs.md
• content/copilot/.../grant-access.md
• content/copilot/.../disable-for-organizations.md
• content/migrations/elm/migrated-data-reference.md

Testing

• rg 'the the ' content --glob '*.md' — no matches in changed files
• Docs-only change; no runtime impact

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Table of review links

Note: Please update the URL for your staging server or codespace.

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
authentication/authenticating-with-single-sign-on/authorizing-an-app-for-single-sign-on.md	ghec	ghec
code-security/reference/code-scanning/codeql/codeql-cli/codeql-query-packs.md	fpt ghec ghes@ 3.21 3.20 3.19 3.18 3.17	fpt ghec ghes@ 3.21 3.20 3.19 3.18 3.17
copilot/how-tos/administer-copilot/manage-for-enterprise/manage-access/disable-for-organizations.md	fpt ghec	fpt ghec
copilot/how-tos/administer-copilot/manage-for-enterprise/manage-access/grant-access.md	fpt ghec	fpt ghec
migrations/elm/migrated-data-reference.md	fpt ghec ghes@ 3.21 3.20 3.19 3.18 3.17	fpt ghec ghes@ 3.21 3.20 3.19 3.18 3.17

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

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