Fixed Style/LeadingCommentSpace RuboCop offense

Change-Id: Id20fb9d5b9c0ca6a6c2c34812f4130d2c8fb0c93
See: https://github.com/bbatsov/ruby-style-guide#hash-space
Bug: T117984

.rubocop_todo.yml

@@ -17,12 +17,6 @@ Style/GlobalVars:
   Exclude:
     - 'tests/browser/features/step_definitions/mmv_performance_steps.rb'
 
-# Offense count: 1
-# Cop supports --auto-correct.
-Style/LeadingCommentSpace:
-  Exclude:
-    - 'tests/browser/features/step_definitions/mmv_performance_steps.rb'
-
 # Offense count: 7
 # Cop supports --auto-correct.
 # Configuration parameters: EnforcedStyle, SupportedStyles, AllowInnerSlashes.

tests/browser/features/step_definitions/mmv_performance_steps.rb

@@ -30,7 +30,7 @@ end
 Then /^the File: page image is loaded$/ do
   on(CommonsPage) do |page|
     page.wait_for_image_load ".fullImageLink img"
-    #Has to be a global variable, otherwise it doesn't survive between scenarios
+    # Has to be a global variable, otherwise it doesn't survive between scenarios
     $commons_time = Time.now.getutc - @commons_open_time
     page.log_performance type: "file-page", duration: $commons_time * 1000
   end