Update rubocop config

Author: sanason

.rubocop.yml

@@ -4,7 +4,9 @@ AllCops:
     - 'lib/generators/**/*'
     - 'db/seeds.rb'
 
-require: rubocop-rails
+plugins:
+  - rubocop-rails
+  - rubocop-rspec
 
 Layout/SpaceAroundOperators:
   AllowForAlignment: false
@@ -88,7 +90,7 @@ Naming/ConstantName:
 Naming/MethodName:
   Enabled: false
 
-Naming/PredicateName:
+Naming/PredicatePrefix:
   Enabled: false
 
 Lint/AssignmentInCondition: