fix(learn): Correct unclear example of passing arguments with the task runner

Fix the example used in the 'Passing arguments to the command' section of the
'Run Node.js scripts from the command line' as it is not referencing the right
package.json script.
Also, change the script used in the example ('node app.js --watch') as it can
confuse the reader into thinking it's a way to enable the Node.js watch option
even though it's just passing an '--watch' argument to the app.js script.

Author: fellowseb

apps/site/pages/en/learn/command-line/run-nodejs-scripts-from-the-command-line.md

@@ -71,8 +71,8 @@ The [`--run`](https://nodejs.org/docs/latest-v22.x/api/cli.html#--run) flag allo
   "type": "module",
   "scripts": {
     "start": "node app.js",
-    "dev": "node --run start -- --watch",
-    "test": "node --test"
+    "test": "node --test",
+    "test:junit": "node --run test -- --test-reporter=\"junit\""
   }
 }
 ```
@@ -85,12 +85,13 @@ node --run test
 
 ### Passing arguments to the command
 
-Let's explain the `dev` key in the `scripts` object of the `package.json` file.
+Let's explain the `test:junit` key in the `scripts` object of the `package.json` file.
 
-The syntax `-- --another-argument` is used to pass arguments to the command. In this case, the `--watch` argument is passed to the `dev` script.
+The syntax `-- --another-argument` is used to pass arguments to the command. In this case, the `--test-reporter` argument is passed to the `node --test` command defined by the `test` script.
 
 ```bash
-node --run dev
+# Executes: node --test --test-reporter="junit"
+node --run test:junit
 ```
 
 ### Environment variables