Changed npx ray -h to npx ray help

[tiktuk]

As npx ray -h does not seem to exist

Description

Fixed command to show npx ray help.

Checklist

• I read the extension guidelines
• I read the documentation about publishing
• I ran npm run build and tested this distribution build in Raycast
• I checked that files in the assets folder are used by the extension itself
• I checked that assets used by the README are placed outside of the metadata folder