Docs: Update NMEA over USB

Fix for forum issue: https://forum.sparkfun.com/viewtopic.php?f=116&t=61716

Author: nseidle

docs/menu_ports.md

@@ -16,14 +16,12 @@ Torch: ![Feature Partially Supported](img/Icons/YellowDot.png)
 
 *Set output to GNSS data over USB Serial*
 
-Enabling **Output GNSS data to USB serial** will pipe all GNSS output (generally NMEA but also RTCM) to the USB serial connection. This permits a wired connection to be made on devices, such as the RTK Torch, that have only one external port (USB). 
+Enabling **Output GNSS data to USB serial** will pipe all GNSS output (generally NMEA but also RTCM) to the USB serial connection. This permits a wired connection to be made on devices, such as the RTK Torch, that have only one external port (USB). To exit this mode, press **+++** to open the configuration menu.
 
 ![Example NMEA output over USB](<img/Terminal/SparkFun RTK Everywhere - Ports USB GNSS Output Example.png>)
 
 *Example NMEA output over USB*
 
-To exit this mode, press **+++** to open the configuration menu.
-
 ## Radio Port
 
 Available on devices that have an external **RADIO** port.