update ssr docs link

Author: yyx990803

Diff for: src/v2/guide/security.md

@@ -182,4 +182,4 @@ HTTP security vulnerabilities, such as cross-site request forgery (CSRF/XSRF) an
 
 ## Server-Side Rendering (SSR)
 
-There are some additional security concerns when using SSR, so make sure to follow the best practices outlined throughout [our SSR documentation](https://ssr.vuejs.org/) to avoid vulnerabilities.
+There are some additional security concerns when using SSR, so make sure to follow the best practices outlined throughout [our SSR documentation](https://v2.ssr.vuejs.org/) to avoid vulnerabilities.

Diff for: src/v2/guide/ssr.md

@@ -6,7 +6,7 @@ order: 503
 
 ## The Complete SSR Guide
 
-We have created a standalone guide for creating server-rendered Vue applications. This is a very in-depth guide for those who are already familiar with client-side Vue development, server-side Node.js development and webpack. Check it out at [ssr.vuejs.org](https://ssr.vuejs.org/).
+We have created a standalone guide for creating server-rendered Vue applications. This is a very in-depth guide for those who are already familiar with client-side Vue development, server-side Node.js development and webpack. Check it out at [v2.ssr.vuejs.org](https://v2.ssr.vuejs.org/).
 
 ## Nuxt.js
 

Diff for: themes/vue/layout/partials/ecosystem_dropdown.ejs

@@ -19,7 +19,7 @@
     <li><ul>
       <li><a href="https://router.vuejs.org/" class="nav-link" target="_blank" rel="noopener">Vue Router</a></li>
       <li><a href="https://vuex.vuejs.org/" class="nav-link" target="_blank" rel="noopener">Vuex</a></li>
-      <li><a href="https://ssr.vuejs.org/" class="nav-link" target="_blank" rel="noopener">Vue Server Renderer</a></li>
+      <li><a href="https://v2.ssr.vuejs.org/" class="nav-link" target="_blank" rel="noopener">Vue Server Renderer</a></li>
     </ul></li>
     <li><h4>News</h4></li>
     <li><ul>