expand text, make link to forge more prominent

Author: nikomatsakis

CONTRIBUTING.md

@@ -397,11 +397,11 @@ For people new to Rust, and just starting to contribute, or even for
 more seasoned developers, some useful places to look for information
 are:
 
+* [Rust Forge][rustforge] contains additional documentation, including write-ups of how to achieve common tasks
 * The [Rust Internals forum][rif], a place to ask questions and
   discuss Rust's internals
 * The [generated documentation for rust's compiler][gdfrustc]
 * The [rust reference][rr], even though it doesn't specifically talk about Rust's internals, it's a great resource nonetheless
-* [Rust Forge][rustforge] contains supplementary useful documentation
 * Although out of date, [Tom Lee's great blog article][tlgba] is very helpful
 * [rustaceans.org][ro] is helpful, but mostly dedicated to IRC
 * The [Rust Compiler Testing Docs][rctd]