Fixup for USE_SYSTEM_JSON=ON/OFF compatibility

Author: podsvirov

core/vm.cpp

@@ -23,7 +23,7 @@ limitations under the License.
 
 #include "desugarer.h"
 #include "json.h"
-#include "json.hpp"
+#include <nlohmann/json.hpp>
 #include "md5.h"
 #include "parser.h"
 #include "ryml_std.hpp" // include this before any other ryml header

third_party/json/BUILD

@@ -6,7 +6,7 @@ cc_library(
     srcs = [
     ],
     hdrs = [
-        "json.hpp",
+        "nlohmann/json.hpp",
     ],
     includes = ["."],
 )