doc: fix machine field in example report

PR-URL: nodejs#25855
Refs: nodejs#25755
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>

doc/api/report.md

@@ -58,7 +58,7 @@ is provided below for reference.
       "name": "node"
     },
     "osVersion": "Linux 3.10.0-862.el7.x86_64 #1 SMP Wed Mar 21 18:14:51 EDT 2018",
-    "machine": "Linux 3.10.0-862.el7.x86_64 #1 SMP Wed Mar 21 18:14:51 EDT 2018test_machine x86_64"
+    "machine": "test_machine x86_64"
   },
   "javascriptStack": {
     "message": "Error: *** test-exception.js: throwing uncaught Error",