[Rubocop] Enable Style/PercentLiteralDelimiters

.rubocop_todo.yml

@@ -46,12 +46,6 @@ Style/FileName:
 Style/GlobalVars:
   Enabled: false
 
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: PreferredDelimiters.
-Style/PercentLiteralDelimiters:
-  Enabled: false
-
 # Offense count: 12
 # Configuration parameters: MaxSlashes.
 Style/RegexpLiteral:

lib/cocoapods/generator/header.rb

@@ -43,12 +43,12 @@ module Pod
         result << "\n"
 
         imports.each do |import|
-          result << %|#import "#{import}"\n|
+          result << %(#import "#{import}"\n)
         end
 
         unless module_imports.empty?
           module_imports.each do |import|
-            result << %|\n@import #{import}|
+            result << %(\n@import #{import})
           end
           result << "\n"
         end

spec/integration.rb

@@ -110,7 +110,7 @@ describe_cli 'pod' do
     s.replace_path `which hg`.chomp, 'HG_BIN' if has_mercurial
     s.replace_user_path 'Library/Caches/CocoaPods', 'CACHES_DIR'
     s.replace_pattern %r(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d [-+]\d{4}), '<#DATE#>'
-    s.replace_pattern %r(\(Took \d+.\d+ seconds\)), '(Took <#DURATION#> seconds)'
+    s.replace_pattern %r{\(Took \d+.\d+ seconds\)}, '(Took <#DURATION#> seconds)'
   end
 
   describe 'Pod install' do