chore: up footer apps

Author: dreamerblue

src/layouts/index.tsx

@@ -401,6 +401,11 @@ class Index extends React.Component<Props, State> {
             {!isCompetitionSide() && (
               <Col xs={24} md={8} className="mb-md-lg">
                 <h3>Our Apps</h3>
+                <p>
+                  <ExtLink className="normal-text-link" href="https://oj.sdutacm.cn/oj-competition-side-client/?from=sdutoj">
+                    Competition Side Client
+                  </ExtLink>
+                </p>
                 <p>
                   <ExtLink className="normal-text-link" href="https://stepbystep.sdutacm.cn/">
                     StepByStep
@@ -419,11 +424,6 @@ class Index extends React.Component<Props, State> {
                     Recent Contests
                   </ExtLink>
                 </p>
-                <p>
-                  <ExtLink className="normal-text-link" href="http://suyu.red/">
-                    Typing System
-                  </ExtLink>
-                </p>
               </Col>
             )}