Fix typo in docs

Author: drewcassidy

docs/actions/compile.md

@@ -6,7 +6,7 @@
 ```{warning}
 Due to the [handover of the Mono project](https://github.com/mono/mono/issues/21796), the `ubuntu-latest` github runner [does not currently include mono or nuget](https://github.com/actions/runner-images/issues/10636#issuecomment-2375010324). 
 
-Please use the `ubuntu-22.04` runner image or install nuget yourself when `use-nuget-restore` is not `'true'`.
+Please use the `ubuntu-22.04` runner image or install nuget yourself when `use-nuget-restore` is `'true'`.
 
 This does not affect projects that use `packagereference`
 ```