Welcome to Stack Exchange and ELL! Unfortunately, doing this sort of thing (if you make it a habit) is likely to get you edit banned - meaning you won't be able to submit edit suggestions at all. Please, don't add commented out junk just to get around edit limits.
As Grace Note says:
Remember, when you suggest an edit, it requires multiple other people to look at it and approve it. The character limit is to prevent people from wasting time by looking at exceptionally minor edits. So, don't limit yourself to just a tiny edit: try to see if you can improve the post to a possible state of perfection. If you hit all errors on a post, then no one else will even need to edit it.
The limits are there for a reason. If you can not find enough to fix (which should be your actual goal), then you have a couple of options depending on your reputation level.
Do nothing if you have under 20 reputation.
If you have 20 or more reputation (network wide), you can post about it in chat.
if you have sufficient reputation to comment (50 reputation), then do so, pointing out the minor error that needs to be adjusted and let the OP or another, higher-reputation user make the edits.
Please be aware that upon attaining 2000 reputation on this site, you will get the permission to edit directly, rather than by submitting edit suggestions. At this point, there will be no minimum character requirement.
For more information about this limitation, please see the related Meta Stack Exchange question.
Why are trivial edits discouraged?
Remove trivial edit restriction (specifically this answer)
How to overcome "Edits must be at least 6 characters"?
Regardless, the request you're making is not something that could even be done on a single-site basis, it would be done network wide and the CMs are specifically against it. They have a firm belief in the editing requirements as they are and don't have any plans to change it in the future.