Fix Codespell complaints

Author: khoih-prog

README.md

@@ -174,7 +174,7 @@ Supposing the STM32 stm32 core version is 2.2.0. These files must be copied into
 - `~/.arduino15/packages/STM32/hardware/stm32/2.2.0/system/STM32F7xx/stm32f7xx_hal_conf_default.h` for Nucleo-144 STM32F7.
 
 Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz,
-theses files must be copied into the corresponding directory:
+these files must be copied into the corresponding directory:
 
 - `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/system/STM32F4xx/stm32f4xx_hal_conf_default.h`
 - `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/system/STM32F7xx/stm32f7xx_hal_conf_default.h
@@ -190,7 +190,7 @@ Supposing the STM32 stm32 core version is 2.2.0. These files must be copied into
 - `~/.arduino15/packages/STM32/hardware/stm32/2.2.0/variants/NUCLEO_L053R8/variant.h` for Nucleo-64 NUCLEO_L053R8.
 
 Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz,
-theses files must be copied into the corresponding directory:
+these files must be copied into the corresponding directory:
 
 - `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/variants/NUCLEO_F767ZI/variant.h`
 - `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/variants/NUCLEO_L053R8/variant.h`