docs: Fix default telemtry port typo

Author: swcollard

docs/source/config-file.mdx

@@ -254,7 +254,7 @@ transport:
 
 | Option        | Type                                     | Default                  | Description                                                                                                                                                                                             |
 | :---------    | :--------------------------------------- | :----------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| `endpoint`    | `URL`                                    | `http://localhost:4137`  | URL to export data to. Requires full path.                                                                                                                                                              |
+| `endpoint`    | `URL`                                    | `http://localhost:4317`  | URL to export data to. Requires full path.                                                                                                                                                              |
 | `protocol`    | `string`                                 | `grpc`                   | Protocol for export. Only `grpc` and `http/protobuf` are supported.                                                                                                                                     |
 | `temporality` | `MetricTemporality` | `Cumulative`             | Optional OTel property that refers to the way additive quantities are expressed, in relation to time, indicating whether reported values incorporate previous measurements (Cumulative) or not (Delta). |