typos in content-type

[Filip Skokan]

about the mentioned content-types in the jwsreq draft

in section-10.4.1 - says to

check the content type of the response is "application/jose"

I believe this should be application/jwt instead

in section-10.4.2 - says to

check the content type of the response is "application/json"

I believe this should be application/jwt too

Both to be in line with the example of fetch response from section-5.2.3

[Nat Sakimura]

fixes #78 - typos in content-type

→ <<cset 0e599f4f4b8b>>