Update my name and email in runtime files (#12763)

diff --git a/runtime/autoload/rust.vim b/runtime/autoload/rust.vim
index 34a3b41..4230332 100644
--- a/runtime/autoload/rust.vim
+++ b/runtime/autoload/rust.vim
@@ -1,4 +1,4 @@
-" Author: Kevin Ballard
+" Author: Lily Ballard
 " Description: Helper functions for Rust commands/mappings
 " Last Modified: May 27, 2014
 " For bugs, patches and license go to https://github.com/rust-lang/rust.vim