fix links in v1.13/software

Signed-off-by: Pete Lumbis <[email protected]>

Author: plumbis

content/v1.13/software/_index.md

@@ -4,8 +4,8 @@ weight: 300
 description: Manage Crossplane installations
 ---
 
-## [Install Crossplane](./install/)
+## [Install Crossplane](install/)
 How to install and customize Crossplane in an existing Kubernetes cluster.
 
-## [Uninstall Crossplane](./uninstall/)
+## [Uninstall Crossplane](uninstall/)
 How to remove Crossplane from a Kubernetes cluster.