changes identifier on person factory back to Faker data

Author: Kneeba921

spec/factories/better_together/people.rb

@@ -8,6 +8,7 @@ module BetterTogether
       id { Faker::Internet.uuid }
       name { Faker::Name.name }
       description { Faker::Lorem.paragraph(sentence_count: 3) }
+      identifier { Faker::Internet.unique.username(specifier: 8..12) }
 
       community
     end