add warning that this pkg uses UC pre-releases

.SRCINFO

@@ -1,5 +1,5 @@
 pkgbase = ungoogled-chromium-xdg
-	pkgdesc = A lightweight approach to removing Google web service dependency - without creating a useless ~/.pki directory
+	pkgdesc = A lightweight approach to removing Google web service dependency - without creating a useless ~/.pki directory (using pre-releases)
 	pkgver = 122.0.6261.128
 	pkgrel = 2
 	url = https://github.com/ungoogled-software/ungoogled-chromium

PKGBUILD

@@ -15,7 +15,7 @@ pkgrel=2
 _launcher_ver=8
 _manual_clone=0
 _system_clang=1
-pkgdesc="A lightweight approach to removing Google web service dependency - without creating a useless ~/.pki directory"
+pkgdesc="A lightweight approach to removing Google web service dependency - without creating a useless ~/.pki directory (using pre-releases)"
 arch=('x86_64')
 url="https://github.com/ungoogled-software/ungoogled-chromium"
 license=('BSD-3-Clause')