README: ppa only works for Ubuntu based systems

diff --git a/README b/README
index 50a29d30f6b45676dca236c20a8013f7e71e80e7..c1d8c7dea704907af10c985bd8efe16e30b144c7 100644 (file)
--- a/README
+++ b/README
@@ -15,8 +15,8 @@ Alternatively, visit [https://f-droid.org/manual/](https://f-droid.org/manual/)
 Installing
 ----------
 
-The easiest way to install the `fdroidserver` tools is on Debian, Ubuntu, Mint
-or other Debian based distributions, you can install using:
+The easiest way to install the `fdroidserver` tools is on Ubuntu, Mint or other
+Ubuntu based distributions, you can install using:
 
     sudo add-apt-repository ppa:guardianproject/ppa
     sudo apt-get update