Fixed header image

Author: benrometsch

README.md

@@ -1,4 +1,4 @@
-<img width="100%" src="https://raw.githubusercontent.com/Flagsmith/flagsmith-frontend/master/hero.png"/>
+<img width="100%" src="https://github.com/Flagsmith/flagsmith/raw/main/static-files/hero.png"/>
 
 # Flagsmith Ruby Client
 
@@ -24,4 +24,4 @@ If you have any questions about our projects you can email <a href="mailto:suppo
 
 [Website](https://www.flagsmith.com/)
 
-[Documentation](https://docs.flagsmith.com/)
+[Documentation](https://docs.flagsmith.com/)