You can do what Stackoverflow does: They have a grace period of 5 minutes where you can edit your post and it will not show in revision history (which is great for fixing typos and stuff like that), but any edit after that period is visible to anyone that clicks the "edited" link.
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You can do what Stackoverflow does: They have a grace period of 5 minutes where you can edit your post and it will not show in revision history (which is great for fixing typos and stuff like that), but any edit after that period is visible to anyone that clicks the "edited" link.