test: replace string concat in test-child-process-constructor

replace string concatenation in test/parallel/test-child-process-constructor.js
with template literals

PR-URL: https://github.com/nodejs/node/pull/14283
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-child-process-constructor.js

@@ -19,8 +19,8 @@ function typeName(value) {
     }, common.expectsError({
       code: 'ERR_INVALID_ARG_TYPE',
       type: TypeError,
-      message: 'The "options" argument must be of type object. Received type ' +
-               typeName(options)
+      message: 'The "options" argument must be of type object. ' +
+               `Received type ${typeName(options)}`
     }));
   });
 }
@@ -35,8 +35,8 @@ function typeName(value) {
     }, common.expectsError({
       code: 'ERR_INVALID_ARG_TYPE',
       type: TypeError,
-      message: 'The "options.file" property must be of type string. Received ' +
-               'type ' + typeName(file)
+      message: 'The "options.file" property must be of type string. ' +
+               `Received type ${typeName(file)}`
     }));
   });
 }
@@ -52,7 +52,7 @@ function typeName(value) {
       code: 'ERR_INVALID_ARG_TYPE',
       type: TypeError,
       message: 'The "options.envPairs" property must be of type array. ' +
-               'Received type ' + typeName(envPairs)
+               `Received type ${typeName(envPairs)}`
     }));
   });
 }
@@ -67,8 +67,8 @@ function typeName(value) {
     }, common.expectsError({
       code: 'ERR_INVALID_ARG_TYPE',
       type: TypeError,
-      message: 'The "options.args" property must be of type array. Received ' +
-               'type ' + typeName(args)
+      message: 'The "options.args" property must be of type array. ' +
+               `Received type ${typeName(args)}`
     }));
   });
 }