An error of `cwv` in R7RS-small 7.2.4

[omasanori]

Originally pointed out by @zick in https://twitter.com/zick_minoh/status/1525789599997448192 (in Japanese).

While the type of applicate is E → E* → P → K → C, the definition of cwv contains an expression applicate ε₂ε*ω which implies E → E* → P → C. The corresponding part should be applicate ε₂ε*ωκ.