valadoc: LinkHelper: turn get_package_link into a virtual method

diff --git a/src/libvaladoc/html/linkhelper.vala b/src/libvaladoc/html/linkhelper.vala
index f9a69034f00e4f73ae4b8990175ec424c7c73229..0f990bb437c7c72d4496a8a33afd5337a73f0830 100755 (executable)
--- a/src/libvaladoc/html/linkhelper.vala
+++ b/src/libvaladoc/html/linkhelper.vala
@@ -33,7 +33,7 @@ public class Valadoc.Html.LinkHelper : Object {
                set;
        }
 
-       public string? get_package_link (Api.Package package, Settings settings) {
+       public virtual string? get_package_link (Api.Package package, Settings settings) {
                if (enable_browsable_check && !package.is_browsable (settings)) {
                        return null;
                }