Ctrl+/ shortcut inserts '--' causing Flux query errors

## Summary: When creating dashboards in Grafana with an InfluxDB data source using the Flux query language, using the Ctrl+/ shortcut to comment out lines inserts -- as the comment. ## Issue: In Flux, the correct comment syntax is // for single-line comments. As a result, queries containing -- produce errors and panels display "No Data", even if the commented lines are not essential to the query. ## Expected Behavior: * When editing Flux queries, the Ctrl+/ shortcut should insert // for single-line comments, ensuring that non-essential lines can be safely commented out without breaking the query.