Update to use instrumentation-client.ts file

Author: Luca Forstner

sentry.client.config.ts renamed to src/instrumentation-client.ts

@@ -1,7 +1,3 @@
-// This file configures the initialization of Sentry on the client.
-// The config you add here will be used whenever a users loads a page in their browser.
-// https://docs.sentry.io/platforms/javascript/guides/nextjs/
-
 import * as Sentry from '@sentry/nextjs';
 import * as Spotlight from '@spotlightjs/spotlight';