proton: fixed sentence

wiki/bittorrent.md

@@ -12,6 +12,8 @@ The list below shows clients with an existing entry in this wiki.
 
 - [Transmission](/wiki/transmission.md) is an easy to use client
 - [qBittorrent](/wiki/qbittorrent.md) is a very feature rich client
+- [CTorrent](http://www.rahul.net/dholmes/ctorrent/) is a command-line utility
+  that can be used as a client.
 
 ## Personal Video Recorders
 

wiki/games/proton.md

@@ -15,9 +15,10 @@ Thus some games, that do not work with Proton, can be run with Proton GE.
 
 ## Setup
 
-Proton and [Proton GE](#ge-version) can be installed on Linux systems by using the
-[ProtonUp](https://github.com/AUNaseef/protonup) application using
-[Flatpak](../linux/flatpak.md) or the package manager of the distribution.
+Proton and [Proton GE](#ge-version) can be installed on Linux systems by using
+the [ProtonUp](https://github.com/AUNaseef/protonup) application which in turn
+can be installed through [Flatpak](../linux/flatpak.md) or the package manager
+of the distribution.
 ProtonUp is usually bundled in a package named `protonup-qt`.
 It can be used to install Proton GE versions for both
 [Steam](/wiki/games/steam.md) and [Lutris](/wiki/games/lutris.md).