[Usage page] Fix typos

static/js/redirect.js

@@ -21,6 +21,7 @@ const redirects = new Map([
     ["/usage#sandboxed-play-services-installation", "/usage#sandboxed-google-play-installation"],
     ["/usage#sandboxed-play-services-limitations", "/usage#sandboxed-google-play-limitations"],
     ["/usage#google-camera", "/usage#pixel-camera"],
+    ["/usage#system-navigation", "/usage#navigation-mode"],
 
     ["/faq#dns", "/faq#custom-dns"],
 

static/releases.html

@@ -6161,7 +6161,7 @@ <h3><a href="#2021.05.16.04">2021.05.16.04</a></h3>
                     <p>Changes since the 2021.05.04.01 release:</p>
 
                     <ul>
-                        <li>enable gesture navigation by default (see <a href="/usage#system-navigation">our guide on system navigation</a> for details on using gesture navigation and switching to a button-based navigation)</li>
+                        <li>enable gesture navigation by default (see <a href="/usage#navigation-mode">our guide on system navigation</a> for details on using gesture navigation and switching to a button-based navigation)</li>
                         <li>System Updater: fix minor theme issue for light theme when pressing preferences</li>
                         <li>replace our workaround for an upstream user profile crash issue with a proper upstream fix from Sony</li>
                         <li>replace our workaround for another upstream user profile crash issue with a proper fix based on the approach of the fix from Sony</li>