operation.handlebars: Using a <div> around {{{description}}} is more robust to

potential HTML tags cannot be nested within the <p> context.

src/main/template/operation.handlebars

@@ -22,7 +22,7 @@
         {{/if}}
         {{#if description}}
         <h4>Implementation Notes</h4>
-        <p class="markdown">{{{description}}}</p>
+        <div class="markdown">{{{description}}}</div>
         {{/if}}
         {{#oauth}}
         <div class="auth">