docs(label): fix demo whitespace issue

Co-authored-by: Steven Spriggs <[email protected]>

Author: bennypowers

elements/pfe-label/demo/pfe-label.html

@@ -14,7 +14,7 @@ <h2 slot="header">Color Options</h2>
     <pfe-label color="blue">Blue label</pfe-label>
     <pfe-label color="green">Green label</pfe-label>
     <pfe-label color="orange">Orange label</pfe-label>
-    <pfe-label color="red">Red <span class="visually-hidden-class">Hat</span> label</pfe-label>
+    <pfe-label color="red"><span>Red <span class="visually-hidden-class">Hat</span> label</span></pfe-label>
     <pfe-label color="purple">Purple label</pfe-label>
     <pfe-label color="cyan">Cyan label</pfe-label>
     <pfe-label color="grey">Grey label</pfe-label>