remove redundant space of co_author sample data

vendor/built_in_modules/personal_conference/spec/factories/writing_conferences.rb

@@ -27,7 +27,7 @@ FactoryGirl.define do
     end
 
     f.sequence(:author_tokens) do |n|
-      "#{data_json[n]["author"].map{|m| m.split(",").reverse.join(" ")}.join(",")}"
+      "#{data_json[n]["author"].map{|m| m.split(",").reverse.map(&:strip).join(" ")}.join(",")}"
     end
 
     #f.sequence(:form_to_start) do |n|

vendor/built_in_modules/personal_journal/spec/factories/writing_journals.rb

@@ -31,7 +31,7 @@ FactoryGirl.define do
     end
 
     f.sequence(:author_tokens) do |n|
-      "#{data_json[n]["author"].map{|m| m.split(",").reverse.join(" ")}.join(",")}"
+      "#{data_json[n]["author"].map{|m| m.split(",").reverse.map(&:strip).join(" ")}.join(",")}"
     end
 
     f.sequence(:form_to_start) do |n|