Fix blatantly wrong documentation link

README.md

@@ -1,6 +1,6 @@
 This crate is a thin CGI/FCGI wrapper for Rust programs. It is *not* a full web framework. You write a Rust program as if it were a CGI, using the provided `stdin`, `stdout`, and `env` replacements. This crate does the work of making it function both as a CGI or as an FCGI, with as much or as little parallelism as called for.
 
-See [the crate documentation](http://doc.rust-lang.org/outer_cgi) for more information.
+See [the crate documentation](https://docs.rs/outer_cgi/0.2.0/outer_cgi/) for more information.
 
 Unices are explicitly supported, but I have only tested it on Linux. Windows support is present but is entirely untested.