Merge pull request #3294 from ehuss/fix-header-links

Fix some issue links

Author: scottmcm

text/2845-supertrait-item-shadowing.md

@@ -1,7 +1,7 @@
 - Feature Name: `supertrait_item_shadowing`
 - Start Date: 2020-01-06
 - RFC PR: [rust-lang/rfcs#2845](https://github.com/rust-lang/rfcs/pull/2845)
-- Rust Issue: [rust-lang/rust#0000](https://github.com/rust-lang/rust/issues/89151)
+- Rust Issue: [rust-lang/rust#89151](https://github.com/rust-lang/rust/issues/89151)
 
 # Summary
 [summary]: #summary

text/3254-types-team.md

@@ -1,7 +1,7 @@
 - Feature Name: N/A
 - Start Date: 2022-04-12
 - RFC PR: [rust-lang/rfcs#3254](https://github.com/rust-lang/rfcs/pull/3254)
-- Rust Issue: [rust-lang/rust#0000](https://github.com/rust-lang/rust/issues/0000)
+- Rust Issue: n/a
 
 # Summary
 [summary]: #summary

text/3262-compiler-team-rolling-leads.md

@@ -1,6 +1,6 @@
 - Feature Name: n/a
 - Start Date: 2022-05-09
-- RFC PR: [rust-lang/rfcs#0000](https://github.com/rust-lang/rfcs/pull/3262)
+- RFC PR: [rust-lang/rfcs#3262](https://github.com/rust-lang/rfcs/pull/3262)
 - Rust Issue: n/a
 
 # Summary