Copy description from Cargo.toml to METADATA am: 3364aa2493

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex/+/1456859

Change-Id: Ia593dc7771f7e55e4c5d09c1c6e460f77653f8fe
diff --git a/METADATA b/METADATA
index 6ba3db5..644cabf 100644
--- a/METADATA
+++ b/METADATA
@@ -1,5 +1,5 @@
 name: "regex"
-description: "A Rust library for parsing, compiling, and executing regular expressions. Its syntax is similar to Perl-style regular expressions, but lacks a few features like look around and backreferences. In exchange, all searches execute in linear time with respect to the size of the regular expression and search text. Much of the syntax and implementation is inspired by RE2."
+description: "An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs."
 third_party {
   url {
     type: HOMEPAGE