Since there is no user accessible way to adjust the MBA hinge, there is little to do to address this than have it examined by Apple or an authorized service provider.
I'm not sure it would be worth the fuss, but it's your Mac and your call.
Get your Mac repaired and see how much will it cost: Mac Repair & Service - Apple Support
You can make a Genius Bar appointment for hardware/software service and support using this link: Contact Apple Support - Apple Support
If this were my MacBook, I think a single drop of silicone lubricant - 1 drop, no spray, apply with a Q-tip swab - at each end of the hinge might be in order. Apple does not specifically recommend this, but it doesn't seem unreasonable. Would this be warranty voiding? 🤷🏽♂️ I wouldn't think so.
See what your service tech has to say about the problem first.