Remove erroneous underscore in dockercompose has_command

Author: canihavethisone

lib/puppet/provider/docker_compose/ruby.rb

@@ -13,7 +13,7 @@
     environment(HOME: '/root')
   end
 
-  has_command(:docker_compose, command(:dockercompose)) do
+  has_command(:dockercompose, command(:dockercompose)) do
     environment(HOME: '/root')
   end