Fix Timeout snippet in README.md (#323)

Author: 0xpablo

Diff for: README.md

@@ -94,7 +94,7 @@ let httpClient = HTTPClient(eventLoopGroupProvider: .createNew,
 ### Timeouts
 Timeouts (connect and read) can also be set using the client configuration:
 ```swift
-let timeout = HTTPClient.Timeout(connect: .seconds(1), read: .seconds(1))
+let timeout = HTTPClient.Configuration.Timeout(connect: .seconds(1), read: .seconds(1))
 let httpClient = HTTPClient(eventLoopGroupProvider: .createNew,
                             configuration: HTTPClient.Configuration(timeout: timeout))
 ```