fix linter error

Author: RomanBachaloSigmaSoftware

app/helpers/application_helper.rb

@@ -1,17 +1,17 @@
-# frozen_string_literal: true
-
-module ApplicationHelper
-  require 'json/ext'
-
-  def format_string(string, *args)
-    string.gsub(/\{(\d+)\}/) { |s| args[s.to_i] }
-  end
-
-  def to_json(hash)
-    hash.to_json
-  end
-
-  def example_available?(example)
-    !(example['SkipForLanguages']) or !example['SkipForLanguages'].include? 'ruby'
-  end
-end
+# frozen_string_literal: true
+
+module ApplicationHelper
+  require 'json/ext'
+
+  def format_string(string, *args)
+    string.gsub(/\{(\d+)\}/) { |s| args[s.to_i] }
+  end
+
+  def to_json(hash)
+    hash.to_json
+  end
+
+  def example_available?(example)
+    !example['SkipForLanguages'] or !example['SkipForLanguages'].include? 'ruby'
+  end
+end