Fix release notes template

Author: yrodiere

release_notes.md

@@ -1,4 +1,4 @@
 
 * See the [website](https://hibernate.org/orm/releases/{{releaseVersionFamily}}) for requirements and compatibilities.
 * See the [What's New](https://docs.hibernate.org/orm/{{releaseVersionFamily}}/whats-new/whats-new.html) guide for details about new features and capabilities.
-* See the [Migration Guide](https://docs.hibernate.org/orm/{{releaseVersionFamily}}/migration-guide/) for details about migration to 7.1 version.
+* See the [Migration Guide](https://docs.hibernate.org/orm/{{releaseVersionFamily}}/migration-guide/) for details about migration.