[jarek]

Surely whether or not the RFC's authors know how to spell a word has no bearing on how sensible it is to correct the spelling of "HTTP_REFERER"? I mean, if dools had said "HTTP referer" then you might have had a point, but "HTTP_REFERER" unambiguously refers to the name of the header field.

[ezalor]

No need to be pedant dude.

[jarek]

At the risk of taking the joke too far, "pedant" is a noun and requires an article preceding it.