Fix url to released 0.15
diff --git a/Cargo.toml b/Cargo.toml
index 443410d..1c295ac 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Parser for Rust source code"
-repository = "https://github.com/dtolnay/syn/tree/next"
+repository = "https://github.com/dtolnay/syn"
 documentation = "https://docs.rs/syn"
 categories = ["development-tools::procedural-macro-helpers"]
 readme = "README.md"