NEW RECORD TYPE: DNAME (#2893)

documentation/functions/domain/DNAME.md

@@ -0,0 +1,23 @@
+---
+name: DNAME
+parameters:
+  - name
+  - target
+  - modifiers...
+parameter_types:
+  name: string
+  target: string
+  "modifiers...": RecordModifier[]
+---
+
+DNAME adds a DNAME record to the domain.
+
+Target should be a string.
+
+{% code title="dnsconfig.js" %}
+```javascript
+D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
+  DNAME("sub", "example.net.")
+);
+```
+{% endcode %}