docs: update readme

Author: knsd

daemonize/Cargo.toml

@@ -5,7 +5,7 @@ license = "MIT/Apache-2.0"
 authors = ["Fedor Gogolev <knsd@knsd.net>"]
 repository = "https://github.com/knsd/daemonize"
 documentation = "https://docs.rs/daemonize"
-readme = "README.md"
+readme = "../README.md"
 description = "Library to enable your code run as a daemon process on Unix-like systems."
 keywords = ["daemon", "daemonize", "unix"]
 categories = ["os::unix-apis"]