Add dns_bh: Best-Hosting.cz DNS API

dnsapi2.md

@@ -125,6 +125,7 @@
 - [201. Use Hostinger.com DNS API](#dns_hostinger)
 - [202. Use lexicon DNS API](#dns_lexicon)
 - [203. Use Baidu Cloud BCD DNS API](#dns_baidu)
+- [204. Use BEST-HOSTING DNS API](#dns_bh)
 - [Use custom API](#dns_myapi)
 
 
@@ -3179,6 +3180,22 @@ Docs:
 - [AK/SK](https://cloud.baidu.com/doc/Reference/s/9jwvz2egb)
 - [BCD-API](https://cloud.baidu.com/doc/BCD/s/pjwvymihl)
 
+<a name="dns_bh"/>
+
+## 204. Use BEST-HOSTING DNS API:
+
+[Best-Hosting.cz](https://best-hosting.cz) is a Czech hosting provider with DNS management API.
+
+To use the API, you need your **API User** and **API Key**. You can generate them after logging into the [client administration](https://best-hosting.cz) under **Profile / REST API**.
+
+```bash
+export BH_API_USER="your_api_user"
+export BH_API_KEY="your_api_key"
+
+acme.sh --issue --dns dns_bh -d example.com -d '*.example.com' --dnssleep 120
+```
+
+Report any bugs or issues [here](https://github.com/acmesh-official/acme.sh/issues/6854).
 
 ## Use custom API
 <a name="dns_myapi"/>