Update esm-npm.mdx to show correct config with AWS Lambda (#13217)

The `NODE_OPTIONS: "--import instrument.mjs"` example needs to be `NODE_OPTIONS: "--import ./instrument.mjs"` to work correctly. The example image is correct, but the docs are not.

Author: ziadsawalha

docs/platforms/javascript/guides/aws-lambda/install/esm-npm.mdx

@@ -142,7 +142,7 @@ export const handler = Sentry.wrapHandler(async (event, context) => {
 To load the SDK before your function starts, you need to preload the `instrument.mjs` by setting the `NODE_OPTIONS` environment variable:
 
 ```bash
-NODE_OPTIONS="--import instrument.mjs"
+NODE_OPTIONS="--import ./instrument.mjs"
 ```
 
 To set environment variables, navigate to your Lambda function, select **Configuration**, then **Environment variables**: