“Dont” looks like a contraction missing an apostrophe.

This list excludes especially ambiguous forms such as “ill” and “well.” Confirm the intended meaning before applying the punctuation.

Example

[Verse]
Dont go

[Verse]
Don't go

The fix

In the workbench this finding carries one control, labelled Replace with Don't. The change is contextual, so it is previewed as a diff in your document first and applies only when you confirm it.

Source

The guideline this rule enforces, as cited on every finding it reports: