Update puppeteer.mdx (#24180)

fix code example

Author: kathayl

src/content/docs/browser-rendering/platform/puppeteer.mdx

@@ -115,13 +115,13 @@ You should also be able to access this information in the dashboard, albeit with
 
 ```json
 {
-	"activeSessions": [
-		"478f4d7d-e943-40f6-a414-837d3736a1dc",
-		"565e05fb-4d2a-402b-869b-5b65b1381db7"
-	],
-	"allowedBrowserAcquisitions": 1,
-	"maxConcurrentSessions": 2,
-	"timeUntilNextAllowedBrowserAcquisition": 0
+  "activeSessions": [
+    { "id": "478f4d7d-e943-40f6-a414-837d3736a1dc" },
+    { "id": "565e05fb-4d2a-402b-869b-5b65b1381db7" }
+  ],
+  "allowedBrowserAcquisitions": 1,
+  "maxConcurrentSessions": 2,
+  "timeUntilNextAllowedBrowserAcquisition": 0
 }
 ```