More Legacy Pages requiring updates

[jamesfredley]

These changes will be made on the master branch or if this is a legacy page which is no longer generated will need to be made on https://github.com/apache/grails-static-website/tree/asf-site-production

1. Pages with youtube videos: https://github.com/search?q=repo%3Aapache%2Fgrails-static-website%20youtube&type=code
2. One blog tag page which still reference grails.org: https://grails.apache.org/blog/tag/4.html
3. One blog post: https://grails.apache.org/blog/2023-03-15-grails-6-m2.html
4. https://grails.apache.org/ecosystem.html
5. https://grails.apache.org/profiles.html
6. https://grails.apache.org/search.html