Fix markdown in READMEs

Author: josesimoes

README.md

@@ -43,7 +43,8 @@ Tool 'nanoff' (version '9.9.9') was successfully installed.
 
 ### Install path issues
 
-> **WARNING:**  That are know issues running commands for STM32 devices when `nanoff` is installed in a path that contains diacritic characters. This is caused by a known bug in STM32 Cube Programmer. 
+> [!CAUTION]
+> That are know issues running commands for STM32 devices when `nanoff` is installed in a path that contains diacritic characters. This is caused by a known bug in STM32 Cube Programmer.
 If that's the case with your user path, for example, you have to install it in a location that does have those.
 To accomplish that, use the following .NET Core CLI command on which the path where the tool will be installed is specified:
 
@@ -129,7 +130,8 @@ In case `nanoff` detects this situation the following warning is shown:
 *** Hold down the BOOT/FLASH button in ESP32 board ***
 ```
 
-> **WARNING:** To update FeatherS2, TinyS2 and some S3 modules, the board needs to be put in _download mode_ by holding [BOOT], clicking [RESET] and then releasing [BOOT].
+> [!WARNING]
+> To update FeatherS2, TinyS2 and some S3 modules, the board needs to be put in _download mode_ by holding [BOOT], clicking [RESET] and then releasing [BOOT].
 
 ### Update the firmware of an ESP32 target
 

README.zh-cn.md

@@ -39,7 +39,8 @@ Tool 'nanoff' (version '9.9.9') was successfully installed.
 
 ### 安装路径相关的问题
 
-> **WARNING:** 已知在安装路径中包含变音符号（例如：法语中的重音符号（acute accent）用于表示元音应该发/ay/的音）时，使用nanoff为STM32设备运行命令会出现问题。这是由于STM32 Cube Programmer中的一个已知错误引起的。如果您的路径中存在这种情况，您必须将其安装在没有这些字符的位置。为了实现这一点，可以使用以下.NET Core CLI命令，在其中指定工具将安装的路径：
+> [!CAUTION]
+> 已知在安装路径中包含变音符号（例如：法语中的重音符号（acute accent）用于表示元音应该发/ay/的音）时，使用nanoff为STM32设备运行命令会出现问题。这是由于STM32 Cube Programmer中的一个已知错误引起的。如果您的路径中存在这种情况，您必须将其安装在没有这些字符的位置。为了实现这一点，可以使用以下.NET Core CLI命令，在其中指定工具将安装的路径：
 
 ```shell
 dotnet tool install nanoff --tool-path c:\a-plain-simple-path-to-install-the-tool
@@ -109,7 +110,8 @@ No target name was provided! Using 'ESP32_REV0' based on the device characterist
 *** Hold down the BOOT/FLASH button in ESP32 board ***
 ```
 
-> **WARNING:** 要更新FeatherS2、TinyS2和一些S3模块，您需要将开发板置于下载模式。具体操作方法是按住[BOOT]按钮，单击[RESET]按钮，然后松开[BOOT]按钮。  
+> [!WARNING]
+> 要更新FeatherS2、TinyS2和一些S3模块，您需要将开发板置于下载模式。具体操作方法是按住[BOOT]按钮，单击[RESET]按钮，然后松开[BOOT]按钮。  
 
 ### 更新ESP32版本的设备器固件