Update README.md

Small update regarding `apt update`

Author: ipeacocks

README.md

@@ -142,11 +142,12 @@ If you don't know which version fits your Linux setup, go to the [PipeWire vs Pu
 Add PPA Repo
 ```bash
 sudo apt install -y curl
-# TheBone’s PPA Repository
+# TheBone’s PPA Repository key
 curl -s --compressed "https://thepbone.github.io/PPA-Repository/KEY.gpg" -o thepbone_ppa.gpg
 
 cat thepbone_ppa.gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/thepbone_ppa.gpg
 echo "deb [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/thepbone_ppa.gpg] https://thepbone.github.io/PPA-Repository ./" > /etc/apt/sources.list.d/thepbone_ppa.list
+sudo apt update
 ```
 Install from PPA