The page at https://www.xwiki.org/xwiki/bin/view/Documentation/DevGuide/FrontendResources/IntegratingJavaScriptLibraries/ has an error at the bottom, in the Related section.
Failed to execute the [velocity] macro. Cause: [The execution of the [velocity] script macro is not allowed in [xwiki:Documentation.DevGuide.FrontendResources.IntegratingJavaScriptLibraries.WebHome]. Check the rights of its last author or the parameters if it’s rendered from another script.]. Click on this message for details.