fix index (#1435)

Author: paulohtb6

modules/deploy/pages/redpanda/manual/index.adoc

@@ -0,0 +1,6 @@
+= Deploy on Linux
+:page-aliases: deploy:deployment-option/self-hosted/manual/index.adoc
+:description: Learn about deployment options on Linux, as well as considerations for high availability and sizing.
+:page-layout: index
+:env-linux: true
+:page-categories: Deployment