[BUG] Fix bug that SAMM spec includes OMP site note

[Yauhenikapl]

Since the migration of this project from OMP to the Eclipse Foundation several pages several OMP specific pages require adjustment:

• https://eclipse-esmf.github.io/samm-specification/snapshot/legal/site-notice.html
• https://eclipse-esmf.github.io/esmf-developer-guide/tooling-guide/bamm-migration.html
• https://eclipse-esmf.github.io/samm-specification/snapshot/appendix/release-notes.html#bamm-2.0.0