MINOR: [Website] Fix milestone link for 13.0.0 blogpost (#394)
I did forget to update the milestone for the 13.0.0 release.
diff --git a/_posts/2023-08-24-13.0.0-release.md b/_posts/2023-08-24-13.0.0-release.md
index fdfa627..cd967a6 100644
--- a/_posts/2023-08-24-13.0.0-release.md
+++ b/_posts/2023-08-24-13.0.0-release.md
@@ -368,7 +368,7 @@
main Arrow monorepo. For notes on the latest release of the Rust
implementation, see the latest [Arrow Rust changelog][5].
-[1]: https://github.com/apache/arrow/milestone/51?closed=1
+[1]: https://github.com/apache/arrow/milestone/53?closed=1
[2]: {{ site.baseurl }}/release/13.0.0.html#contributors
[3]: {{ site.baseurl }}/release/13.0.0.html#changelog
[4]: {{ site.baseurl }}/docs/r/news/
