[Conf] Add maximum group score for phishing

conf/scores.d/phishing_group.conf

@@ -15,6 +15,8 @@
 #
 # See https://rspamd.com/doc/tutorials/writing_rules.html for details
 
+max_score = 10.0;
+
 symbols = {
     "PHISHING" {
         weight = 4.0;