[MAINTAINERS] add more MAINTAINERS lists

Author: LittleGreyG

MAINTAINERS

@@ -90,11 +90,11 @@ path: bsp/stm32/stm32g030-tiny-board
 owners: 下里巴人(hywing)<[email protected]>
 
 tag: bsp_stm32h743-st-nucleo
-path: bsp\stm32\stm32h743-st-nucleo
+path: bsp/stm32/stm32h743-st-nucleo
 owners: PengXu(LittleGreyG)<[email protected]>
 
 tag: bsp_stm32h750-artpi
-path: bsp\stm32\stm32h750-artpi
+path: bsp/stm32/stm32h750-artpi
 owners: PengXu(LittleGreyG)<[email protected]>
 
 tag: documentation