Enable RSpec/NotToNot cop and auto-correct offenses

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

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/models/generic_commit_status_spec.rb b/spec/models/generic_commit_status_spec.rb
index 0caf5869c24..d0e02618b6b 100644
--- a/spec/models/generic_commit_status_spec.rb
+++ b/spec/models/generic_commit_status_spec.rb
@@ -27,13 +27,13 @@ describe GenericCommitStatus, models: true do
     describe :context do
       subject { generic_commit_status.context }
 
-      it { is_expected.to_not be_nil }
+      it { is_expected.not_to be_nil }
     end
 
     describe :stage do
       subject { generic_commit_status.stage }
 
-      it { is_expected.to_not be_nil }
+      it { is_expected.not_to be_nil }
     end
   end
 end