Update known_issues.mdx

Author: djw-m

product_docs/docs/pgd/6/known_issues.mdx

@@ -73,7 +73,7 @@ Take these EDB Postgres Distributed (PGD) design limitations into account when p
     fail if one of the nodes were unresponsive. Consensus is required for some PGD
     operations, such as distributed sequence generation. For more information about
     the consensus mechanism used by EDB Postgres Distributed, see [Architectural
-    details](/pgd/latest/reference/architectures/).
+    details](/pgd/latest/reference/overview/basic-architecture/).
 
 ### Multiple databases on single instances