DOCS: Added GitBook code blocks syntax for dnsconfig.js. (#2149)

Co-authored-by: Tom Limoncelli <tlimoncelli@stackoverflow.com>

documentation/functions/domain/SSHFP.md

@@ -36,6 +36,8 @@ SSHFP contains a fingerprint of a SSH server which can be validated before SSH c
 
 `value` is the fingerprint as a string.
 
+{% code title="dnsconfig.js" %}
 ```javascript
 SSHFP('@', 1, 1, '00yourAmazingFingerprint00'),
 ```
+{% endcode %}