update original

rust-lang-ru · Nov 17, 2020 · 9f28a32 · 9f28a32
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diff --git a/rustbook-en/src/ch08-03-hash-maps.md b/rustbook-en/src/ch08-03-hash-maps.md
@@ -219,7 +219,7 @@ necessarily have to implement your own hasher from scratch;
 [crates.io](https://crates.io/) has libraries shared by other Rust users that
 provide hashers implementing many common hashing algorithms.
 
-[^siphash]: [https://www.131002.net/siphash/siphash.pdf](https://www.131002.net/siphash/siphash.pdf)
+[^siphash]: [https://en.wikipedia.org/wiki/SipHash](https://en.wikipedia.org/wiki/SipHash)
 
 ## Summary