Edited Issue: Typo in debugger error message [626]

When I hit refresh in the debug attach dialog with Node selected in the combo box, I see this message:
```
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Error
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Could not attach to Node.js process at 'localhost:5858'. Make sure that the process is running behind the remote debug proxy (RemoteDebug.js), and that the debuger port (default 5858) has been opened on the target host.
---------------------------
Retry Cancel
---------------------------
```

'debuger' -> 'debugger'