:syringe: DOMが表示されるように修正

src/client/js/app.js

@@ -648,11 +648,13 @@ socket.on('page:editingWithHackmd', (data) => {
 });
 
 // render for stuff credit
-const pageStuffCredit = document.getElementById('staff-credit');
-if (pageStuffCredit) {
+const pageStuffCreditElem = document.getElementById('staff-credit');
+if (pageStuffCreditElem) {
   ReactDOM.render(
-    <StaffCredit />,
+    <StaffCredit></StaffCredit>,
+    pageStuffCreditElem,
   );
+
 }
 
 // うわーもうー (commented by Crowi team -- 2018.03.23 Yuki Takei)

src/client/js/components/StaffCredit/StaffCredit.jsx

@@ -7,11 +7,11 @@ import React from 'react';
  * @class StaffCredit
  * @extends {React.Component}
  */
-class StaffCredit extends React.Component {
+export default class StaffCredit extends React.Component {
 
   render() {
     return (
-      <p>スタッフロール</p>
+      <div>スタッフロール</div>
     );
   }
 

src/server/views/layout/layout.html

@@ -229,7 +229,7 @@
 </div><!-- /#wrapper -->
 
 <!-- /#staff-credit -->
-<div id="staff-credit"><div>
+<div id="staff-credit"></div>
 
 {% include '../modal/shortcuts.html' %}