Fix broken links after updating general docs of lens-ide (#3185)

Signed-off-by: Mario Sarcher <mario@sarcher.de>

docs/README.md

@@ -51,4 +51,4 @@ To provide feedback on the documentation or issues with the Lens Extension API,
 
 ## Downloading Lens
 
-[Download Lens](https://github.com/lensapp/lens/releases) for macOS, Windows, or Linux.
+[Download Lens](https://k8slens.dev/) for macOS, Windows, or Linux.

docs/extensions/get-started/your-first-extension.md

@@ -78,7 +78,7 @@ npm run dev
 You must restart Lens for the extension to load.
 After this initial restart, reload Lens and it will automatically pick up changes any time the extension rebuilds.
 
-With Lens running, either connect to an existing cluster or create a new one - refer to the latest [Lens Documentation](https://docs.k8slens.dev/latest/clusters/adding-clusters) for details on how to add a cluster in Lens IDE.
+With Lens running, either connect to an existing cluster or create a new one - refer to the latest [Lens Documentation](https://docs.k8slens.dev/main/catalog/) for details on how to add a cluster in Lens IDE.
 You will see the "Hello World" page in the left-side cluster menu.
 
 ## Develop the Extension

src/renderer/components/+add-cluster/add-cluster.tsx

@@ -112,7 +112,7 @@ export class AddCluster extends React.Component {
         <h2>Add Clusters from Kubeconfig</h2>
         <p>
           Clusters added here are <b>not</b> merged into the <code>~/.kube/config</code> file.
-          Read more about adding clusters <a href={`${docsUrl}/clusters/adding-clusters/`} rel="noreferrer" target="_blank">here</a>.
+          Read more about adding clusters <a href={`${docsUrl}/catalog/add-clusters/`} rel="noreferrer" target="_blank">here</a>.
         </p>
         <div className="flex column">
           <AceEditor