Update link to v8.0.0 in CHANGELOG

Author: bessman

CHANGELOG.md

@@ -225,7 +225,7 @@ _Maintanence release._
 
 _Initial release._
 
-[7.0.7]: https://github.com/bessman/mcbootflash/releases/tag/v7.0.7
+[8.0.0]: https://github.com/bessman/mcbootflash/releases/tag/v8.0.0
 [7.0.6]: https://github.com/bessman/mcbootflash/releases/tag/v7.0.6
 [7.0.5]: https://github.com/bessman/mcbootflash/releases/tag/v7.0.5
 [7.0.4]: https://github.com/bessman/mcbootflash/releases/tag/v7.0.4