Update logi_g29.md

Signed-off-by: Andrew Ealovega <andrew@ealovega.dev>

software/ros/logi_g29.md

@@ -27,6 +27,8 @@ outputs ackermannDrive and Twist messages directly, bypassing the need for somet
 
 - `max_steering_rad` - Max steering wheel angle, in radians. Assumed to be symmetrical.
 
+- `wheelbase` - Wheelbase of phoenix.
+
 ## Notes
 
 The raw joy interface gives wheels and pedals in percents, so it's best to first create an ackermann message using the
@@ -38,4 +40,4 @@ final twist.
 If the wheel angle is greater than the max angle, we should pin it to max. Could use force feedback to help with this if
 we get it figured out.
 
-Have brake take priority over throttle if both are pressed, since only one can be encoded in the message.
+Have brake take priority over throttle if both are pressed, since only one can be encoded in the message.