Update firmware_update.md

Author: PaulZC

docs/firmware_update.md

@@ -273,22 +273,26 @@ The SparkFun RTK firmware is compiled using Arduino (currently v1.8.15). To comp
 
 1. Install [Arduino](https://www.arduino.cc/en/software).
 2. Install ESP32 for Arduino. [Here](https://learn.sparkfun.com/tutorials/esp32-thing-hookup-guide#installing-via-arduino-ide-boards-manager) are some good instructions for installing it via the Arduino Boards Manager. **Note**: Use v2.0.2 of the core. **Note:** We use the 'ESP32 Dev Module' for pin numbering. Select the correct board under Tools->Board->ESP32 Arduino->ESP32 Dev Module.
-3. Change the Partition table. Replace 'C:\Users\\[user name]\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\tools\partitions\app3M_fat9M_16MB.csv' with the app3M_fat9M_16MB.csv [file](https://github.com/sparkfun/SparkFun_RTK_Firmware/blob/main/Firmware/app3M_fat9M_16MB.csv?raw=true) found in the [Firmware folder](https://github.com/sparkfun/SparkFun_RTK_Firmware/tree/main/Firmware). This will increase the program partition from a maximum of 1.9MB to 3MB.
+3. Change the Partition table. Replace
+
+    ```C:\Users\\[user name]\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\tools\partitions\app3M_fat9M_16MB.csv```
+
+    with the app3M_fat9M_16MB.csv [file](https://github.com/sparkfun/SparkFun_RTK_Firmware/blob/main/Firmware/app3M_fat9M_16MB.csv?raw=true) found in the [Firmware folder](https://github.com/sparkfun/SparkFun_RTK_Firmware/tree/main/Firmware). This will increase the program partition from a maximum of 1.9MB to 3MB.
 4. From the Arduino IDE, set the core settings from the **Tools** menu:
 
     A. Set the 'Partition Scheme' to *16M Flash (3MB APP/9MB FATFS)*. This will use the 'app3M_fat9M_16MB.csv' updated partition table.
 
     B. Set the 'Flash Size' to 16MB (128mbit)
 
-5. Obtain all the [required libraries](firmware_update.md#Required-Libraries).
+5. Obtain all the [required libraries](firmware_update.md#required-libraries).
 
 Once compiled, firmware can be uploaded directly to a unit when the RTK unit is on and the correct COM port is selected under the Arduino IDE Tools->Port menu.
 
 If you are seeing the error:
 
 > text section exceeds available space ...
 
-You have not replaced the partition file correctly. See the 'Change Partition table' step inside the [Windows instructions](firmware_update.md#windows).
+You have not replaced the partition file correctly. See the 'Change Partition table' step inside the [Windows instructions](firmware_update.md#windows-1).
 
 **Note:** There are a variety of compile guards (COMPILE_WIFI, COMPILE_AP, etc) at the top of RTK_Surveyor.ino that can be commented out to remove them from compilation. This will greatly reduce the firmware size and allow for faster development of functions that do not rely on these features (serial menus, system configuration, logging, etc).