doc: update error message of example in repl

Error message in document is different from actual result.

PR-URL: #45920
Reviewed-By: Kohei Ueno <kohei.ueno119@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: deokjinkim

doc/api/repl.md

@@ -212,7 +212,7 @@ Explicitly setting `_error` to a value will disable this behavior.
 
 ```console
 > throw new Error('foo');
-Error: foo
+Uncaught Error: foo
 > _error.message
 'foo'
 ```
@@ -225,8 +225,8 @@ Support for the `await` keyword is enabled at the top level.
 > await Promise.resolve(123)
 123
 > await Promise.reject(new Error('REPL await'))
-Error: REPL await
-    at repl:1:45
+Uncaught Error: REPL await
+    at REPL2:1:54
 > const timeout = util.promisify(setTimeout);
 undefined
 > const old = Date.now(); await timeout(1000); console.log(Date.now() - old);