Fix Issue 17469 - View source code for object.d is broken

Author: wilzbach

dpl-docs/views/layout.dt

@@ -163,7 +163,7 @@ html(lang='en-US')
             - string project = "dlang.org";
             - string path_prefix, line_suffix, filename;
             - if( modname )
-              - if( modname.startsWith("core.") )
+              - if( modname.startsWith("core.") || modname.startsWith("object"))
                 - project = "druntime", path_prefix = "src/";
               - else if( modname.startsWith("dmd.") || modname.startsWith("ddmd.") )
                 - project = "dmd", path_prefix = "src/";