fix typo

Author: QingWei-Li

docs/_sidebar.md

@@ -21,7 +21,7 @@
   * [Vue compatibility](vue.md)
   * [CDN](cdn.md)
   * [Offline Mode(PWA)](pwa.md)
-  * [Server-client renderer(SSR)](ssr.md)
+  * [Server-Side Rendering(SSR)](ssr.md)
   * [Embed Files <sup style="color:red">(new)<sup>](embed-files.md)
 
 * [Awesome docsify](awesome.md)

docs/de-de/_sidebar.md

@@ -21,7 +21,7 @@
   * [Vue Kompatibilität](de-de/vue.md)
   * [CDN](de-de/cdn.md)
   * [Offline Modus (PWA)](de-de/pwa.md)
-  * [Server-client renderer (SSR)](de-de/ssr.md)
+  * [Server-Side Rendering (SSR)](de-de/ssr.md)
   * [Embed Files <sup style="color:red">(new)<sup>](de-de/embed-files.md)
 
 * [Awesome docsify](de-de/awesome.md)

lib/docsify.js

@@ -4283,7 +4283,7 @@ function initFetch (vm) {
   var ref = vm.config;
   var loadSidebar = ref.loadSidebar;
 
-  // server-client renderer
+  // Server-Side Rendering
   if (vm.rendered) {
     var activeEl = getAndActive(vm.router, '.sidebar-nav', true, true);
     if (loadSidebar && activeEl) {

src/core/fetch/index.js

@@ -121,7 +121,7 @@ export function fetchMixin (proto) {
 export function initFetch (vm) {
   const { loadSidebar } = vm.config
 
-  // server-client renderer
+  // Server-Side Rendering
   if (vm.rendered) {
     const activeEl = getAndActive(vm.router, '.sidebar-nav', true, true)
     if (loadSidebar && activeEl) {