Copy description from Cargo.toml to METADATA am: 3592d87b82 am: b078d52cf7 am: ee754b667a am: c94cf4f90a

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/protobuf-codegen/+/1457155

Change-Id: I5992897e9824abd1bc88ede816129eb7ed661236
diff --git a/METADATA b/METADATA
index 43064d9..321ce13 100644
--- a/METADATA
+++ b/METADATA
@@ -1,5 +1,5 @@
 name: "protobuf-codegen"
-description: "Code generator for rust-protobuf.\n\nIncludes a library and `protoc-gen-rust` binary.\n\nSee `protoc-rust` and `protobuf-codegen-pure` crates.\n"
+description: "Code generator for rust-protobuf.  Includes a library and `protoc-gen-rust` binary.  See `protoc-rust` and `protobuf-codegen-pure` crates."
 third_party {
   url {
     type: HOMEPAGE