Update data-not-migrated.md with new entries (#62181)

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Vanessa <vgrl@github.com>

Author: 3 people

data/reusables/enterprise-migration-tool/data-not-migrated.md

@@ -10,6 +10,7 @@
 * {% data variables.product.prodname_actions %} secrets, variables, environments, self-hosted runners, {% data variables.actions.hosted_runner %}s, workflow artifacts, or workflow run history
 * GitHub Apps and GitHub App installations
 * {% data variables.large_files.product_name_short %} objects and large binaries (repositories using {% data variables.large_files.product_name_short %} are still supported, see [Limitations of {% data variables.product.prodname_importer_proper_name %}](#limitations-of-github-enterprise-importer))
+* Links from comment bodies to specific comments or events within issues, pull requests, or discussions (the original link is retained)
 * Links from commits to pull requests that were rebase merged
 * Mentions of users, teams, and organizations in pull request, issue, release, and comment bodies (the username originally mentioned is retained)
 * Packages in {% data variables.product.prodname_registry %}