Update README.md

Author: JFCote

README.md

@@ -22,7 +22,7 @@ Thanks to our sponsors for supporting this project!
 
 ### :1st_place_medal: Gold
 
-[![Fern](./docs/sponsors/fern_logo_tagline.svg)](https://www.devmark.ai/fern/?utm_source=openapitools-openapistylevalidator&utm_loc=readme&utm_type=logo)
+[Select your sponsor tier](https://github.com/sponsors/JFCote) and get your BIG logo here with a link to your website.
 
 ### :2nd_place_medal: Silver