Fix keywords in Cargo.toml

Author: Luthaf

Cargo.toml

@@ -14,7 +14,7 @@ description = "DLPack integration for Rust"
 
 repository = "https://github.com/metatensor/dlpk"
 readme = "README.md"
-keywords = ["dlpack", "deep learning", "machine learning"]
+keywords = ["dlpack", "deep-learning", "machine-learning"]
 
 [dependencies]
 ndarray = { version = "0.16", optional = true }