Update website/docs/r/ruleset.html.markdown

Co-authored-by: Pedro Sousa <[email protected]>

website/docs/r/ruleset.html.markdown

@@ -210,7 +210,7 @@ The following arguments are supported:
 <a id="nestedblock--action-parameters-matched-data"></a>
 **Nested schema for `matched_data`**
 
-* `public_key` - (Optional) Public key to use within WAF Ruleset payload logging to view the HTTP request parameters.
+* `public_key` - (Optional) Public key to use within WAF Ruleset payload logging to view the HTTP request parameters. You can generate a public key [using the `matched-data-cli` command-line tool](https://developers.cloudflare.com/waf/managed-rulesets/payload-logging/command-line/generate-key-pair) or [in the Cloudflare dashboard](https://developers.cloudflare.com/waf/managed-rulesets/payload-logging/configure).
 
 <a id="nestedblock--action-parameters-uri"></a>
 **Nested schema for `uri`**