Fix OS examples annotated by Yitao

evaluation_examples/examples/os/43c2d64c-bab5-4dcb-a30c-b888321c319a.json

@@ -12,14 +12,13 @@
       "func": "exact_match",
       "result": {
         "type": "vm_command_line",
-        "config": {
-          "command": "[ -d '/path/to/directory' ] && echo 'Directory exists.' || echo 'Directory does not exist.'"
-        }
+        "command": "[ -d '/home/user/Desktop/test' ] && echo 'Directory exists.' || echo 'Directory does not exist.'",
+        "shell": true
       },
       "expected": {
         "type": "rule",
         "rules":{
-          "expected": "Directory exists."
+          "expected": "Directory exists.\n"
         }
       }
     }