[doc] Add a note about why the dependency is needed
[doc] Add a note about why the dependency is needed

adamretter/exist,wolfgangmm/exist,adamretter/exist,adamretter/exist,dizzzz/exist,lcahlander/exist,windauer/exist,lcahlander/exist,eXist-db/exist,dizzzz/exist,eXist-db/exist,wolfgangmm/exist,wolfgangmm/exist,wolfgangmm/exist,windauer/exist,eXist-db/exist,adamretter/exist,lcahlander/exist,wolfgangmm/exist,wolfgangmm/exist,windauer/exist,adamretter/exist,lcahlander/exist,windauer/exist,windauer/exist,eXist-db/exist,lcahlander/exist,dizzzz/exist,windauer/exist,lcahlander/exist,adamretter/exist,dizzzz/exist,dizzzz/exist,eXist-db/exist,eXist-db/exist,dizzzz/exist