Use `module_fuction` instead of `extend self`

https://github.com/rubocop-hq/ruby-style-guide#module-function

Use `module_fuction` instead of `extend self`
https://github.com/rubocop-hq/ruby-style-guide#module-function
d14bcd1c · Jonathon Reinhart · af705c3f · d14bcd1c
Commit d14bcd1c authored Dec 13, 2018 by Jonathon Reinhart
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lib/hooks_utils.rb lib/hooks_utils.rb +1 -1

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--- a/lib/hooks_utils.rb
+++ b/lib/hooks_utils.rb
 module HooksUtils
-  extend self
+  module_function

  # Gets an array of Git push options from the environment
  def get_push_options