Fixed yet another incorrect internal link.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1412539 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/site/apt/usage.apt.vm b/src/site/apt/usage.apt.vm
index ebce917..2725135 100644
--- a/src/site/apt/usage.apt.vm
+++ b/src/site/apt/usage.apt.vm
@@ -315,7 +315,7 @@
    only direct dependencies, set the excludeTransitive parameter to true.
 
    Dependencies can be included or excluded by a list of types. See
-   {{{unpack-dependencies-mojo.html}unpack-dependencies}} for details.
+   {{{./unpack-dependencies-mojo.html}unpack-dependencies}} for details.
 
    The artifacts can be unpacked in subfolders based on type. For example: