hardcode page name

Author: rustagir

source/index.txt

@@ -30,7 +30,7 @@ MongoDB Java Driver
    /integrations
    /compatibility
    /upgrade
-   /validate-signatures
+   Validate Driver Artifact Signatures </validate-signatures>
    /legacy
    View the Source <https://github.com/mongodb/mongo-java-driver>