Fix Layout/LineContinuationSpacing offenses in kitchen

Author: A1EF

bin/kitchen

@@ -19,8 +19,8 @@ if File.file?(bundle_binstub)
     load(bundle_binstub)
   else
     abort(
-      'Your `bin/bundle` was not generated by Bundler, '\
-      'so this binstub cannot run.  Replace `bin/bundle` by running '\
+      'Your `bin/bundle` was not generated by Bundler, ' \
+      'so this binstub cannot run.  Replace `bin/bundle` by running ' \
       '`bundle binstubs bundler --force`, then run this command again.'
     )
   end