✏️ Fix typo in test description

spec/initializers/deprecation_warning_subscriber_spec.rb

@@ -67,7 +67,7 @@ def instrument_deprecation_warning
       )
     end
 
-    context "when an exeption ocurrs" do
+    context "when an exception occurs" do
       before { allow(slack_service).to receive(:send_notification).and_raise(StandardError) }
 
       it "logs error to Sentry" do