repl: use _Node.js_ in user-facing REPL text

We use _node (REPL)_ in one place and _Node.js (REPL)_ in another place
in error messages in repl.js. Use _Node.js_ in both places.

PR-URL: #34644
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

lib/repl.js

@@ -814,7 +814,7 @@ function REPLServer(prompt,
 
       if (e && !self[kBufferedCommandSymbol] && cmd.trim().startsWith('npm ')) {
         self.output.write('npm should be run outside of the ' +
-                                'node REPL, in your normal shell.\n' +
+                                'Node.js REPL, in your normal shell.\n' +
                                 '(Press Control-D to exit.)\n');
         self.displayPrompt();
         return;

test/parallel/test-repl.js

@@ -372,7 +372,7 @@ const errorTests = [
   {
     send: 'npm install foobar',
     expect: [
-      'npm should be run outside of the node REPL, in your normal shell.',
+      'npm should be run outside of the Node.js REPL, in your normal shell.',
       '(Press Control-D to exit.)'
     ]
   },