management info updated, mentors teams edited (#124)

Co-authored-by: Mark Perman <maperm@taltech.ee>

_data/mentors.yml

@@ -5,7 +5,7 @@
   age: 26
   photo: eva_marie_alasi_mentor.jpg
   speciality: IT-süsteemide administreemine
-  teams: ['Juhatus','Helpdesk','Üritused']
+  teams: ['Helpdesk','Üritused']
   term: 2 
   contactMethods:
     - name: Messenger
@@ -44,7 +44,7 @@
   age: 21
   photo: karina_reisel_mentor.jpg
   speciality: Riistvara arendus ja programmeerimine
-  teams: ['Turundus', 'Juhatus']
+  teams: ['Turundus']
   term: 3 
   contactMethods:
     - name: Discord