License text in unicode isn't displayed correctly

[tooltitude-support]

Here's the extension: https://open-vsx.org/extension/tooltitudeteam/tooltitude
Here's the license: https://openvsxorg.blob.core.windows.net/resources/tooltitudeteam/tooltitude/darwin-arm64/1.4.0/LICENSE.md

Apostrophe isn't displayed correctly there. See, for example, 1.3., the second paragraph:

License fees must be paid via a third-party reseller ("Reseller"), chosen by Vendor, under Reseller’s terms and conditions.

You probably need to add utf-8 somewhere in the headers.