Update spec/acceptance/ini_subsetting_spec.rb

Co-authored-by: Romain Tartière <romain@blogreen.org>

Author: Ramesh7

spec/acceptance/ini_subsetting_spec.rb

@@ -120,7 +120,7 @@
     MANIFEST
 
     it 'applies the manifest twice' do
-      run_shell("printf \"[one]\\nkey = alphabet betatrons\n\" > #{basedir}/ini_subsetting.ini", expect_failures: true)
+      run_shell("printf \"[one]\\nkey = alphabet betatrons\\n\" > #{basedir}/ini_subsetting.ini", expect_failures: true)
       expect { idempotent_apply(pp) }.not_to raise_error
     end