Updated nlohmann::basicjson::erase (markdown)

nlohmann::basicjson::erase.md

@@ -28,6 +28,8 @@ The iterator `pos` must be valid and dereferenceable. Thus the `end()` iterator
 
 The iterator `first` does not need to be dereferenceable if `first==last`: erasing an empty range is a no-op.
 
+If erase is called with valid and dereferenceable iterators for JSON values of type number, string, or boolean, the value will be changed to `null`.
+
 ## Parameter
 
 - `pos`: iterator to the element to remove