fix camel case for 418 status (#860)
fix camel case for 418 status (#860)

The status phrase is "I'm a teapot". Removing the apostrophe and camel casing should result in the string `imATeapot`, not `imaTeapot`.
apple/swift-nio,apple/swift-nio,apple/swift-nio,apple/swift-nio,apple/swift-nio