Update posts/2024-09-23-Project-Goals-Sep-Update.md

Co-authored-by: kamulos <[email protected]>

Author: nikomatsakis

posts/2024-09-23-Project-Goals-Sep-Update.md

@@ -86,7 +86,7 @@ RFL on Rust CI is implemented but still waiting on documented policy. The first
 
 The following goals have been completed:
 
-* [Implement "merged doctests" to save doctest time](https://github.com/rust-lang/rust-project-goals/issues/103)
+* [Implement "merged doctests" to save doctest time](https://github.com/rust-lang/rust-project-goals/issues/111)
 
 ## Stalled or orphaned goals