Fixed the broken link

Michael-F-Bryan · Michael-F-Bryan · commit 2e437c772d86 · 2020-05-11T11:18:23.000+08:00
diff --git a/README.md b/README.md
@@ -32,4 +32,5 @@ license, shall be dual licensed as above, without any additional terms or
 conditions.
 
 [API Docs]: https://michael-f-bryan.github.io/const-arrayvec
-[blog]: http://adventures.michaelfbryan.com/posts/const-arrayvec.md
+[blog]: http://adventures.michaelfbryan.com/posts/const-arrayvec/
+
