Update errors.mdx (#23974)

Add new error code for incorrect content-type

Author: dinasaur404

src/content/docs/workers/observability/errors.mdx

@@ -25,6 +25,7 @@ When a Worker running in production has an error that prevents it from returning
 | `1024`     | Worker cannot make a subrequest to a Cloudflare-owned IP address.                                                                               |
 | `1027`     | Worker exceeded free tier [daily request limit](/workers/platform/limits/#daily-request).                                                       |
 | `1042`     | Worker tried to fetch from another Worker on the same zone, which is only [supported](/workers/runtime-apis/fetch/) when the [`global_fetch_strictly_public` compatibility flag](/workers/configuration/compatibility-flags/#global-fetch-strictly-public) is used. |
+| `10162`    | Module has an unsupported Content-Type.                                                                                                         |
 
 Other `11xx` errors generally indicate a problem with the Workers runtime itself. Refer to the [status page](https://www.cloudflarestatus.com) if you are experiencing an error.