Add dns_hosttech

dnsapi2.md

@@ -84,6 +84,7 @@
 - [160. Use  TencentCloud (DNSPod) API](#dns_tencent)
 - [161. Use Samba AD DC API](#dns_samba)
 - [162. Use West.cn API](#dns_west_cn)
+- [163. Use hosttech.ch API](#dns_hosttech)
 - [Use custom API](#dns_myapi)
 - [Use lexicon DNS API](#dns_lexicon)
 
@@ -2096,6 +2097,24 @@ The login variables will be saved in `~/.acme.sh/account.conf` and will be reuse
 
 Report any bugs or issues [here](https://github.com/acmesh-official/acme.sh/issues/4894)
 
+<a name="dns_hosttech"/>
+
+## 163. Use Hosttech API
+
+Create an DNS API token in hosttech portal (DNS editor).
+
+Set your API key:
+```sh
+export Hosttech_Key='xxx'
+```
+
+To issue a certificate run:
+```sh
+./acme.sh --issue --dns dns_hosttech -d example.com -d *.example.com
+```
+
+Report any bugs or issues [here](https://github.com/acmesh-official/acme.sh/issues/4900)
+
 <a name="dns_myapi"/>
 
 ## Use custom API