Promote CLI annotations on reference tables

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>

Author: jviotti

layouts/_default/single.html

@@ -177,6 +177,7 @@ <h1 class="fw-bold">{{ .Params.keyword }}</h1>
                 {{ if isset .Params "annotation" }}
                   {{ partial "instance-badges.html" (dict "types" .Params.annotation.kind) }}
                   <small>{{ .Params.annotation.description }}</small>
+                  <small class="d-block mt-2 pt-1 border-top"><b>Hint:</b> You can use the <a href="https://github.com/sourcemeta/jsonschema/blob/main/docs/validate.markdown"><code>jsonschema validate</code></a> command to collect annotations from the command-line</small>
                 {{ else }}
                   <small>None</small>
                 {{ end }}