update publication date

Author: lqd

posts/inside-rust/2023-09-29-polonius-update.md renamed to posts/inside-rust/2023-09-25-polonius-update.md

@@ -69,7 +69,7 @@ This is a rough roadmap, where we have the most visibility on the first steps:
 
 Here are the roadmap's milestones:
 
-![Graph of the Polonius roadmap](../../../../images/inside-rust/2023-09-29-polonius-update/roadmap.png)
+![Graph of the Polonius roadmap](../../../../images/inside-rust/2023-09-25-polonius-update/roadmap.png)
 
 ### 1. Factoring out higher-ranked concerns from the main path