Fix links to primary key guide

Author: noahshpak

docusaurus.config.js

@@ -441,6 +441,10 @@ const config = {
 					},
 					{ from: '/en/analyze', to: '/en/sql-reference' },
 					{ from: '/en/guides', to: '/en/guides/creating-tables' },
+					{
+						from: '/en/optimize/sparse-primary-indexes',
+						to: '/en/guides/best-practices/sparse-primary-indexes',
+					},
 					{
 						from: '/en/guides/improving-query-performance/sparse-primary-indexes',
 						to: '/en/guides/best-practices/sparse-primary-indexes',