[Help] Add MA book as resource
<topic href="https://www.archimatetool.com" label="Archi Website">
</topic>
- <topic href="http://www.opengroup.org/subjectareas/enterprise/archimate" label="ArchiMate The Open Group Website">
- </topic>
<topic href="http://pubs.opengroup.org/architecture/archimate3-doc/toc.html" label="ArchiMate 3 Specification">
</topic>
+ <topic href="https://masteringarchimate.com/the-book-edition-iii/" label="Mastering ArchiMate Book">
+ </topic>
</toc>
