no-vary: misleading document title

[reschke]

Is this document primarily about a new header field, or about an extension for/of HTTP Caching? It's the latter.

So the title really should be something like "The HTTP Caching Extension".

And then Abstract and Introduction would need to be adjusted.

(source: https://mailarchive.ietf.org/arch/msg/httpbisa/hYjX0N1Lnu3ab432r8Hs9LbZUEw/)