update readme in cargo.toml

Author: KillingSpark

ruzstd/Cargo.toml

@@ -8,7 +8,7 @@ homepage = "https://github.com/KillingSpark/zstd-rs"
 repository = "https://github.com/KillingSpark/zstd-rs"
 description = "A decoder for the zstd compression format"
 exclude = ["decodecorpus_files/*", "dict_tests/*", "fuzz_decodecorpus/*"]
-readme = "Readme.md"
+readme = "../Readme.md"
 keywords = ["zstd", "zstandard", "decompression"]
 categories = ["compression"]