Enable RSpec/NotToNot cop and auto-correct offenses

Also removes the note from the development/testing.md guide

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/workers/post_receive_spec.rb b/spec/workers/post_receive_spec.rb
index 2f465bcf1e3..20d3dfb42b3 100644
--- a/spec/workers/post_receive_spec.rb
+++ b/spec/workers/post_receive_spec.rb
@@ -61,7 +61,7 @@ describe PostReceive do
       context "does not create a Ci::Commit" do
         before { stub_ci_commit_yaml_file(nil) }
 
-        it { expect{ subject }.to_not change{ Ci::Commit.count } }
+        it { expect{ subject }.not_to change{ Ci::Commit.count } }
       end
     end
   end