rustdoc: Don't include the path for primitive methods in the search results

Displaying `std::u32::max_value` is misleading so just display
`u32::max_value`.

Author: ollie27

src/librustdoc/html/static/main.js

@@ -587,9 +587,14 @@
                     } else if (item.parent !== undefined) {
                         var myparent = item.parent;
                         var anchor = '#' + type + '.' + name;
-                        displayPath = item.path + '::' + myparent.name + '::';
+                        var parentType = itemTypes[myparent.ty];
+                        if (parentType === "primitive") {
+                            displayPath = myparent.name + '::';
+                        } else {
+                            displayPath = item.path + '::' + myparent.name + '::';
+                        }
                         href = rootPath + item.path.replace(/::/g, '/') +
-                               '/' + itemTypes[myparent.ty] +
+                               '/' + parentType +
                                '.' + myparent.name +
                                '.html' + anchor;
                     } else {