- update README.md

Author: dirkarnez

README.md

@@ -32,3 +32,4 @@ staticserver
 ### Warning(s)
 - The mime-type in Windows registry may be modified by other software causing wrong `Content-Type` in response, see issue(s)
   - https://github.com/golang/go/issues/32350
+    - How to fix: `regedit` -> go to `Computer\HKEY_CLASSES_ROOT\.js` -> set `Content Type` to `application/javascript`