updated developer mode links to use web archive

src/app/add-device/conn-hint/conn-hint.component.html

@@ -1,6 +1,6 @@
 <p>
   Please check the address and port you have entered, make sure &quot;Developer Mode&quot; is installed and turned
   on. And you have good network connection between your computer and your TV.<br>
-  Check out <a href="https://webostv.developer.lge.com/develop/getting-started/developer-mode-app" appExternalLink>
+  Check out <a href="https://web.archive.org/web/20240218180930/https://webostv.developer.lge.com/develop/getting-started/developer-mode-app" appExternalLink>
   Installing Developer Mode App</a> for more info.
 </p>

src/app/add-device/keyserver-hint/keyserver-hint.component.html

@@ -1,5 +1,5 @@
 <p>Please make sure &quot;Key Server&quot; in Developer Mode App is turned on during device setup.</p>
 <img ngSrc="/assets/images/hint-key-server.png" alt="Turn &quot;Key Server&quot; on in Developer Mode App" height="450"
      width="800">
-<a href="https://webostv.developer.lge.com/develop/getting-started/developer-mode-app" appExternalLink>
+<a href="https://web.archive.org/web/20240218180930/https://webostv.developer.lge.com/develop/getting-started/developer-mode-app" appExternalLink>
   See: Using Developer Mode App</a>

src/app/add-device/wizard/devmode-setup/devmode-setup.component.html

@@ -6,7 +6,7 @@
   <div class="card-body" [ngbCollapse]="prepareAccountDone">
     <p>
       You'll need a developer account to use Developer Mode.
-      Please read <a href="https://webostv.developer.lge.com/develop/getting-started/preparing-lg-account"
+      Please read <a href="https://web.archive.org/web/20231005025611/https://webostv.developer.lge.com/develop/getting-started/preparing-lg-account"
                      appExternalLink>
       Preparing LG Account</a> for creating one.
     </p>