fix: update structs README
@@ -4,4 +4,4 @@ Rust has three struct types: a classic c struct, a tuple struct, and a unit stru
#### Book Sections
-- [Structures](https://doc.rust-lang.org/rust-by-example/custom_types/structs.html)
+- [Structures](https://doc.rust-lang.org/book/ch05-01-defining-structs.html)
