Add tracking issue to #3176.

Author: ehuss

text/3176-cargo-multi-dep-artifacts.md

@@ -1,7 +1,7 @@
 - Feature Name: (`multidep`)
 - Start Date: 2021-09-14
 - RFC PR: [rust-lang/rfcs#3176](https://github.com/rust-lang/rfcs/pull/3176)
-- Tracking Issue: [rust-lang/cargo#0000](https://github.com/rust-lang/cargo/issues/0000)
+- Tracking Issue: [rust-lang/cargo#10030](https://github.com/rust-lang/cargo/issues/10030)
 
 # Summary
 [summary]: #summary