Fix reference to apps/manifest/bluetooth API

NOTRY=True

Review URL: https://codereview.chromium.org/509253003

Cr-Commit-Position: refs/heads/master@{#292987}

chrome/common/extensions/docs/templates/articles/manifest/bluetooth.html

@@ -39,6 +39,6 @@ available for the $(ref:bluetooth) API.
 <section>
 <h2 id="reference">Reference</h2>
 <p class="api_reference">
-{{+partials.type type:apis.apps.manifestTypes.byName.bluetooth/}}
+{{+partials.type type:apis.apps.extensionsManifestTypes.byName.bluetooth/}}
 </p>
 </section>