Keep in mind he is only asking you try to proofread before posting in order to create less notification noise. If you post something and decide you need to edit it you are welcome to do so, dont feel it is an issue. But if you can catch the errors before hand it would just be nice for others since it can be annoying to see messages pop in and out of existance.
What your doing is fine though, just be aware of the mechanics and if you can try to minimize the noise is all.