ci: fix README path in tattoy/Cargo.toml

Author: tombh

crates/tattoy/Cargo.toml

@@ -3,7 +3,7 @@ name = "tattoy"
 description = "Text-based compositor for modern terminals"
 version = "0.1.4"
 edition = "2021"
-readme = "README.md"
+readme = "../../README.md"
 repository = "https://github.com/tattoy-org/tattoy"
 license = "MIT"
 authors = ["Tom Buckley-Houston <[email protected]>"]