update sentry config to new self hosted sentry

apps/next/env.example

@@ -1,18 +1,16 @@
+# You can find all default values in the env.js file which makes our values type safe.
 ### Server Variables ###
-# Convex
-CONVEX_SELF_HOSTED_URL=
-CONVEX_SELF_HOSTED_ADMIN_KEY=
-NEXT_PUBLIC_CONVEX_URL=
-SETUP_SCRIPT_RAN=
+NODE_ENV=
 # Sentry
 SENTRY_AUTH_TOKEN=
 
 ### Client Variables ###
-# Next                  # Default Values:
-NEXT_PUBLIC_SITE_URL='http://localhost:3000'
-# Sentry                           # Default Values
+# Next
+NEXT_PUBLIC_SITE_URL=
+# Convex
+NEXT_PUBLIC_CONVEX_URL=
+# Sentry
 NEXT_PUBLIC_SENTRY_DSN=
 NEXT_PUBLIC_SENTRY_URL=
 NEXT_PUBLIC_SENTRY_ORG=
 NEXT_PUBLIC_SENTRY_PROJECT_NAME=
-