fix: update structs README

seancad · web-flow · commit bcf14cf677ad · 2020-12-15T08:32:46.000+01:00
diff --git a/exercises/structs/README.md b/exercises/structs/README.md
@@ -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)

Original file line number	Diff line number	Diff line change
`@@ -4,4 +4,4 @@ Rust has three struct types: a classic c struct, a tuple struct, and a unit stru`
`4`	`4`
`5`	`5`	`#### Book Sections`
`6`	`6`
`7`		`-- [Structures](https://doc.rust-lang.org/rust-by-example/custom_types/structs.html)`
	`7`	`+- [Structures](https://doc.rust-lang.org/book/ch05-01-defining-structs.html)`