sendMarkdown method
发送 markdown 文本
Implementation
Future<void> sendMarkdown({
required String title,
required String markdownText,
At? at,
}) async {
final bodyMap = {
'msgtype': 'markdown',
'markdown': {
'title': title,
'text': markdownText,
},
'at': at?.toMap() ?? {},
};
await _sendWithMap(bodyMap);
}