Merge pull request #2826 from justanotheranonymoususer/patch-1

Consistency with `using` in README.md

README.md

@@ -870,7 +870,7 @@ assert(p == p2);
 To make this work with one of your types, you only need to provide two functions:
 
 ```cpp
-using nlohmann::json;
+using json = nlohmann::json;
 
 namespace ns {
     void to_json(json& j, const person& p) {

doc/mkdocs/docs/features/arbitrary_types.md

@@ -54,7 +54,7 @@ assert(p == p2);
 To make this work with one of your types, you only need to provide two functions:
 
 ```cpp
-using nlohmann::json;
+using json = nlohmann::json;
 
 namespace ns {
     void to_json(json& j, const person& p) {