Remove unnecessary description and whitespace from nexumi.mdc file

.env.example

@@ -0,0 +1,11 @@
+NODE_ENV=development
+BOT_TOKEN=
+BOT_CLIENT_ID=
+BOT_GUILD_ID=
+DATABASE_URL=postgresql://nexumi:nexumi@postgres:5432/nexumi
+REDIS_URL=redis://redis:6379
+LOG_LEVEL=info
+DEFAULT_LOCALE=de
+METRICS_TOKEN=
+SENTRY_DSN=
+BACKUP_RETENTION_DAYS=14