Re-wording

Author: gorhill

RELEASE.HEAD.md

@@ -3,7 +3,7 @@
 #### How to Install the Developer Build:
 
 - **Firefox**: Download the build from [uBlock0_%version%.firefox.signed.xpi](https://github.com/gorhill/uBlock/releases/download/%version%/uBlock0_%version%.firefox.signed.xpi).
-    - uBO works best on Firefox, check out [why](https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox).
+    - uBO works best on Gecko-based browsers, check out [why](https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox).
 
 - **Chromium**: Install directly from the [Chrome Web Store](https://chromewebstore.google.com/detail/ublock-origin-development/cgbcahbpdhpcegmbfconppldiemgcoii).