Update docs

Author: nseidle

docs/img/GreenDot.jpg

@@ -1,6 +1,6 @@
 # System Configuration
 
-Surveyor: Yes / Express: Yes / Express Plus: Yes / Facet: Yes
+Surveyor: [Feature Supported](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/GreenDot.jpg) / Express: Yes / Express Plus: Yes / Facet: [Feature Supported](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Firmware/main/docs/img/RedDot.jpg)
 
 All device settings are stored both in internal memory and an SD card if one is detected. The device will load the latest settings at each power on. If there is a discrepancy between the internal settings and a settings file then the settings file will be used. This allows a collection of RTK products to be identically configured using one 'golden' settings file loaded onto an SD card.
 

docs/img/OLEDLibBanner.png

@@ -79,6 +79,7 @@ nav:
     - configure_with_wifi.md
     - configure_with_serial.md
     - configure_with_settings_file.md
+    - configure_ucenter.md
     - configure_gnss_receiver.md
     - configure_messages.md
     - configure_base.md
@@ -88,17 +89,9 @@ nav:
     - configure_lband.md
     - menu_system_status.md
     - firmware_update.md
-    - configure_ucenter.md
   - Hardware Specifics:
     - hardware_rtk_surveyor.md
     - hardware_rtk_express.md
     - hardware_rtk_express_plus.md
     - hardware_rtk_facet.md
-  - Updating Firmware:
-    - update_intro.md
-    - update_sd.md
-    - update_wifi.md
-    - update_serial.md
-    - update_gui.md
-    - update_custom.md