pico-imx6ul: Fix TechNexion spelling on MAINTAINERS file

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

board/technexion/pico-imx6ul/MAINTAINERS

@@ -1,4 +1,4 @@
-Technexion PICO-IMX6UL board
+TechNexion PICO-IMX6UL board
 M:	Richard Hu <richard.hu@technexion.com>
 M:	Fabio Estevam <fabio.estevam@nxp.com>
 S:	Maintained
@@ -6,7 +6,7 @@ F:	board/technexion/pico-imx6ul/
 F:	include/configs/pico-imx6ul.h
 F:	configs/pico-imx6ul_defconfig
 
-Technexion PICO-HOBBIT-IMX6UL
+TechNexion PICO-HOBBIT-IMX6UL
 M:	Otavio Salvador <otavio@ossystems.com.br>
 S:	Maintained
 F:	configs/pico-hobbit-imx6ul_defconfig