Update docs formatting

Replaced HTML superscript tags with Markdown-style caret notation for I2C references

Author: santaimpersonator

docs/hardware_overview.md

@@ -19,7 +19,7 @@ The boards of the GNSS Flex system have the following features:
 1. **U.FL Connector**
 :	The primary interface for connecting an external GNSS antenna. *(Some GNSS modules may come packaged with a built-in ceramic antenna.)*
 1. **GNSS Flex Female Headers**
-:	The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I<sup>2</sup>C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
+:	The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I^2^C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
 
 </div>
 
@@ -39,7 +39,7 @@ The boards of the GNSS Flex system have the following features:
 1. **U.FL Connector**
 :	The signal for this connector is isolated and passed-through to the SMA connector on the *carrier* board. It is used for bridging the external antenna connection of the U.FL connector on GNSS Flex module to the SMA connector on the *carrier* board.
 1. **GNSS Flex Male Headers**
-:	The *carrier* boards host GNSS Flex modules on the two 2x10-pin, 2mm pitch male headers. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I<sup>2</sup>C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
+:	The *carrier* boards host GNSS Flex modules on the two 2x10-pin, 2mm pitch male headers. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I^2^C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
 1. **Status LED**
 :	Often *carrier* boards will include status LEDs to indicate the board is powered, the RTK status, a PPS signal, and a GNSS fix.
 1. **Other Features**
@@ -52,7 +52,7 @@ The boards of the GNSS Flex system have the following features:
 
 
 ## Header Pins
-The GNSS Flex ecosystem is designed around two 2x10-pin, 2mm pitch headers used mate the two board types. Depending on the capabilities of the GNSS receiver on the GNSS Flex module, these pins breakout the USB, UART (x4), I<sup>2</sup>C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
+The GNSS Flex ecosystem is designed around two 2x10-pin, 2mm pitch headers used mate the two board types. Depending on the capabilities of the GNSS receiver on the GNSS Flex module, these pins breakout the USB, UART (x4), I^2^C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
 
 
 <figure markdown>

flex_boards/SparkPNT_GNSS_Flex_Module_DAN-F10N/docs/hardware_overview.md

@@ -117,7 +117,7 @@
 
 
 ## Board Layout
-The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I<sup>2</sup>C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
+The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I^2^C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
 
 The DAN-F10N GNSS Flex module has the following features:
 

flex_boards/SparkPNT_GNSS_Flex_Module_LG290P/docs/hardware_overview.md

@@ -115,7 +115,7 @@
 
 
 ## Board Layout
-The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I<sup>2</sup>C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
+The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows board to be easily swapped for repairs. Depending on the capabilities of the GNSS receiver, these pins will breakout the USB, UART (x4), I^2^C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
 
 The LG290P GNSS Flex module has the following features:
 
@@ -413,7 +413,7 @@ The accuracy of the position reported from the LG290P GNSS module, can be improv
 
 
 ## GNSS Flex Headers
-The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows boards to be easily swapped for repairs. For the LG290P GNSS receiver, these pins will breakout the UART (x3) and I<sup>2</sup>C interfaces along with a PPS, event, and LED status indication signal from the GNSS receiver.
+The GNSS Flex system is designed around two 2x10-pin, 2mm pitch headers used mate the two types of boards. A standardized pin layout, keeps the ecosystem pin-compatible for upgrades and allows boards to be easily swapped for repairs. For the LG290P GNSS receiver, these pins will breakout the UART (x3) and I^2^C interfaces along with a PPS, event, and LED status indication signal from the GNSS receiver.
 
 
 <div class="grid" markdown>