fix(replay): Update docs for manually capturing replays for 404 errors (#11262)

Author: mydea

docs/platforms/javascript/common/troubleshooting/index.mdx

@@ -128,7 +128,6 @@ Starting with version `6.7.0` of the JavaScript SDK, you can use the `tunnel` op
 
 To enable the `tunnel` option, provide either a relative or an absolute URL in your `Sentry.init` call. When you use a relative URL, it's relative to the current origin, and this is the form that we recommend. Using a relative URL will not trigger a preflight CORS request, so no events will be blocked, because the ad-blocker will not treat these events as third-party requests.
 
-
 ```javascript
 Sentry.init({
   dsn: "___PUBLIC_DSN___",
@@ -339,14 +338,12 @@ document.body.addEventListener(
     if (!event.target) return;
 
     if (event.target.tagName === "IMG") {
-      Sentry.captureMessage(
-        `Failed to load image: ${event.target.src}`,
-        "warning"
+      Sentry.captureException(
+        new Error(`Failed to load image: ${event.target.src}`)
       );
     } else if (event.target.tagName === "LINK") {
-      Sentry.captureMessage(
-        `Failed to load css: ${event.target.href}`,
-        "warning"
+      Sentry.captureException(
+        new Error(`Failed to load css: ${event.target.href}`)
       );
     }
   },