DOCS: Migrated documentation website to Gitbook (#1809)

documentation/providers/dnsoverhttps.md

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+This is a read-only/monitoring "registrar". It does a DNS NS lookup to confirm the nameserver servers are correct. This "registrar" is unable to update/correct the NS servers but will alert you if they are incorrect. A common use of this provider is when the domain is with a registrar that does not have an API.
+
+## Configuration
+
+To use this provider, add an entry to `creds.json` with `TYPE` set to `DNSOVERHTTPS`.
+
+```json
+{
+  "dohdefault": {
+    "TYPE": "DNSOVERHTTPS"
+  }
+}
+```
+
+The DNS-over-HTTPS provider defaults to using Google Public DNS however you may configure an alternative RFC 8484 DoH provider using the `host` parameter.
+
+Example:
+
+```json
+{
+  "dohcloudflare": {
+    "TYPE": "DNSOVERHTTPS",
+    "host": "cloudflare-dns.com"
+  }
+}
+```
+
+Some common DoH providers are:
+
+* `cloudflare-dns.com` ([Cloudflare](https://developers.cloudflare.com/1.1.1.1/dns-over-https))
+* `9.9.9.9` ([Quad9](https://www.quad9.net/about/))
+* `dns.google` ([Google Public DNS](https://developers.google.com/speed/public-dns/docs/doh))
+
+## Metadata
+This provider does not recognize any special metadata fields unique to DOH.
+
+## Usage
+An example `dnsconfig.js` configuration:
+
+```javascript
+var REG_MONITOR = NewRegistrar("dohcloudflare");
+
+D("example.com", REG_MONITOR,
+  NAMESERVER("ns1.example.com."),
+  NAMESERVER("ns2.example.com."),
+);
+```
+
+{% hint style="info" %}
+**NOTE**: This checks the NS records via a DNS query.  It does not check the
+registrar's delegation (i.e. the `Name Server:` field in whois). In theory
+these are the same thing but there may be situations where they are not.
+{% endhint %}