docs: fix getting started UX issues from #7510

Author: KumarMunesh12

src/components/Splash/second/left.mdx

@@ -8,6 +8,7 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
 export default {
+  mode: "development",
   entry: "./src/index.js",
   output: {
     path: path.resolve(__dirname, "dist"),
@@ -16,4 +17,4 @@ export default {
 };
 ```
 
-Prefer a video walkthrough? **[Without config](https://youtu.be/3Nv9muOkb6k?t=21293)**
+Prefer a video walkthrough instead? See the **[Without config](https://youtu.be/3Nv9muOkb6k?t=21293)** guide.

src/content/index.mdx

@@ -39,7 +39,7 @@ import Install from "../components/Splash/install/install.mdx";
   </div>
 </div>
 
-Then run `webpack` on the command-line to create `bundle.js`.
+Then run `npx webpack` on the command-line to create `bundle.js`.
 
 ## Awesome, isn't it? Let's dive in!