Fix existing redirects

README.md

@@ -1271,7 +1271,7 @@ See also [Are we game yet?](https://arewegameyet.com)
   * [mattnenterprise/rust-pop3](https://github.com/mattnenterprise/rust-pop3) — A [POP3](https://en.wikipedia.org/wiki/Post_Office_Protocol) client for Rust [<img src="https://api.travis-ci.org/mattnenterprise/rust-pop3.svg?branch=master">](https://travis-ci.org/mattnenterprise/rust-pop3)
 * SSH
   * [alexcrichton/ssh2-rs](https://github.com/alexcrichton/ssh2-rs) — [libssh2](https://www.libssh2.org/) bindings [<img src="https://api.travis-ci.com/alexcrichton/ssh2-rs.svg?branch=master">](https://travis-ci.org/alexcrichton/ssh2-rs)
-  * [Thrussh](https://github.com/pijul-scm/thrussh/) — an SSH library written from scratch in Rust, backed by [libsodium](https://download.libsodium.org/doc/)
+  * [Thrussh](https://github.com/pijul-scm/thrussh/) — an SSH library written from scratch in Rust, backed by [libsodium](https://doc.libsodium.org/)
 * Stomp
   * [zslayton/stomp-rs](https://github.com/zslayton/stomp-rs) — A [STOMP 1.2](http://stomp.github.io/stomp-specification-1.2.html) client implementation in Rust [<img src="https://api.travis-ci.org/zslayton/stomp-rs.svg?branch=master">](https://travis-ci.org/zslayton/stomp-rs)
 * uTP
@@ -1485,7 +1485,7 @@ A registry allows you to publish your Rust libraries as crate packages, to share
   * [Rust for professionals](https://overexact.com/rust-for-professionals/) — A quick introduction to Rust for experienced software developers.
   * [Rust in Motion](https://www.manning.com/livevideo/rust-in-motion?a_aid=cnichols&a_bid=6a993c2e) — A video series by [Carol Nichols](https://github.com/carols10cents) and [Jake Goulding](https://github.com/shepmaster) (paid)
   * [rust-learning](https://github.com/ctjhoa/rust-learning) — A collection of useful resources to learn Rust
-  * [Rustlings](https://github.com/rust-lang/rustlings) — small exercises to get you used to reading and writing Rust code
+  * [Rustlings](https://github.com/fmoko/rustlings) — small exercises to get you used to reading and writing Rust code
   * [stdx](https://github.com/brson/stdx) — Learn these crates first as an extension to std
   * [University of Pennsylvania's Comp Sci Rust Programming Course](http://cis198-2016s.github.io/schedule/)
   * [Build a language VM](https://blog.subnetzero.io/post/building-language-vm-part-00/)