chore: add missing comment

Author: Justintime50

spec/webhook_spec.rb

@@ -81,7 +81,7 @@
 
       webhook_body = EasyPost::Util.validate_webhook(Fixture.event_bytes, headers, Fixture.webhook_secret)
       expect(webhook_body['description']).to eq('tracker.updated')
-      expect(webhook_body['result']['weight']).to eq(136.0)
+      expect(webhook_body['result']['weight']).to eq(136.0) # Ensure we convert floats properly
     end
 
     it 'validate a webhook with invalid secret' do