refactor(factories): use blocks to se values

Author: ldlsegovia

spec/dummy/spec/factories/cities.rb

@@ -2,7 +2,7 @@
 
 FactoryBot.define do
   factory :city do
-    name "MyString"
-    region nil
+    name { "MyString" }
+    region { nil }
   end
 end

spec/dummy/spec/factories/countries.rb

@@ -2,6 +2,6 @@
 
 FactoryBot.define do
   factory :country do
-    name "MyString"
+    name { "MyString" }
   end
 end

spec/dummy/spec/factories/regions.rb

@@ -2,7 +2,7 @@
 
 FactoryBot.define do
   factory :region do
-    name "MyString"
-    country nil
+    name { "MyString" }
+    country { nil }
   end
 end