cleanup, docs

site/doc/pages/2_DValue_each.txt

@@ -6,6 +6,7 @@ f : callback invoked for each child, or once for a scalar value
 return value : none
 
 :see
+>types
 0_DValue
 2_DValue_map
 2_DValue_filter
@@ -16,8 +17,10 @@ Iterates a `DValue` without modifying it. References are dereferenced before ite
 
 For map-shaped values, the callback receives each child and its key. List-shaped maps iterate in numeric index order (`0`, `1`, `2`, ...); ordinary maps iterate in `std::map` string-key order. Scalar values invoke the callback once with the current value and an empty key.
 
-```cpp
-rows.each([&](const DValue& row, String key) {
-    print(key, ": ", row.get_by_path("title").to_string("Untitled"), "\n");
-});
-```
+:example
+DValue user;
+user["name"] = "Ada";
+user["role"] = "admin";
+StringList keys;
+user.each([&](const DValue& item, String key) { keys.push_back(key); });
+print(join(keys.sort(), ","), "\n");