Theory - add EuCAPT acronym and link
suggestion: On European level, the APC theory team contributed to the organization of the European Consortium for Astroparticle Theory --> add acronym EuCAPT and a link to the site https://www.eucapt.org/
suggestion: On European level, the APC theory team contributed to the organization of the European Consortium for Astroparticle Theory --> add acronym EuCAPT and a link to the site https://www.eucapt.org/