more concise key binding descriptions in menu

src/data/keybindings.in

@@ -1,11 +1,11 @@
 Key Bindings:
-Space: Slow down (or match velocity)
-AWSD/Shift/Ctrl: Movement
+Space: Slow down, match velocity
+AWSD/Shift/Ctrl: Move
+Tab: Toggle Augmented Reality
 R: Rotate (hold + move mouse)
-E: Interact: Talk to people, enter vehicles
+E: Interact
 F: Flashlight
 Q: Exit vehicle
-Tab: Toggle Augmented Reality
 M: Map
 C: Camera
 Y: Rotation stabilizer
@@ -18,8 +18,8 @@ Left click: Target objects
 Right click: Zoom
 
 Cheats:
-G: Toggle god mode + cheats
-V/B: Impossible acceleration forward/backward
-Shift+V/B: Same as V/B, but a thousand times faster
-Z: Impossibly instant stopping
+G: Toggle cheats + invulnerability
+V/B: Impossible acceleration
+Shift+V/B: Extreme acceleration
+Z: Stop
 X: Teleport to target