Minor corrections

Author: PaulZC

flex_boards/SparkPNT_GNSS_Flex_Module_mosaic-X5/docs/hardware_overview.md

@@ -299,7 +299,7 @@ For the users who prefer a command-line interface, Septentrio has you covered. U
 
 
 ## 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 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 to 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. Depending on the capabilities of the GNSS receiver, these pins will breakout the UART (x4), I<sup>2</sup>C, and SD card interfaces along with any PPS or event signals of the GNSS receiver.
 
 The mosaic-X5 GNSS Flex module has the following features: