State Safe Mode default as False.

Author: BigBlueHat

playground/next/index.html

@@ -237,7 +237,7 @@ <h2 class="ui massive header">JSON-LD Playground</h2>
                 <div class="ui radio checkbox">
                   <input type="radio" id="options-api-safe-default" name="safe" value="" checked
                     v-model="options.safe">
-                  <label for="options-api-safe-default">Default</label>
+                  <label for="options-api-safe-default">Default (False)</label>
                 </div>
               </div>
               <div class="field">