message: doc(github): Add question about flashed image to issue template
diff: - **Etcher version:**
  - **Operating system and architecture:**
  -- **Do you see any meaningful error information on DevTools?**
  +- **Image flashed:**
  +- **Do you see any meaningful error information in the DevTools?**
  <!-- You can open DevTools by pressing `Ctrl+Alt+I`, or `Cmd+Alt+I` if you're running OS X. -->
  