Add Terminal section title

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/+preferences/terminal.tsx

@@ -24,7 +24,9 @@ export const Terminal = observer(() => {
       : "System default shell"
   );
 
-  return (<div>
+  return (<section>
+    <h2>Terminal</h2>
+
     <section id="shell">
       <SubTitle title="Terminal Shell Path"/>
       <Input
@@ -74,5 +76,5 @@ export const Terminal = observer(() => {
         onChange={(value) => userStore.terminalConfig.fontFamily=value}
       />
     </section>
-  </div>);
+  </section>);
 });