Update editor.md (#9884)

re-ordered the "Validate Code Setup" instructions to handle the case
that occurred on my computer during setup.

Fix for #9882

## Presubmit checklist

- [ X] This PR doesn’t contain automatically generated corrections
(Grammarly or similar).
- [ X] This PR follows the [Google Developer Documentation Style
Guidelines](https://developers.google.com/style) — for example, it
doesn’t use _i.e._ or _e.g._, and it avoids _I_ and _we_ (first person).
- [ X] This PR uses [semantic line
breaks](https://github.com/dart-lang/site-shared/blob/main/doc/writing-for-dart-and-flutter-websites.md#semantic-line-breaks)
of 80 characters or fewer.

Co-authored-by: Brett Morgan <[email protected]>
Co-authored-by: Anthony Sansone <[email protected]>

src/get-started/editor.md

@@ -80,14 +80,6 @@ follow Microsoft's instructions for the relevant platform:
 
 ## Validate your VS Code setup
 
-1. Go to **View** <span aria-label="and then">></span> **Output**.
-
-   You can also press <kbd>Ctrl</kbd> / <kbd>Cmd</kbd> +
-   <kbd>Shift</kbd> + <kbd>U</kbd>.
-
-1. In the dropdown on the upper right of the **Output** panel,
-   select **flutter (flutter)**.
-
 1. Go to **View** <span aria-label="and then">></span>
    **Command Palette...**.
 
@@ -99,6 +91,15 @@ follow Microsoft's instructions for the relevant platform:
 1. Select the **Flutter: Run Flutter Doctor**.
    Flutter Doctor runs and its response displays in the **Output** panel.
 
+1. Go to **View** <span aria-label="and then">></span> **Output**.
+
+   You can also press <kbd>Ctrl</kbd> / <kbd>Cmd</kbd> +
+   <kbd>Shift</kbd> + <kbd>U</kbd>.
+
+1. In the dropdown on the upper right of the **Output** panel,
+   select **flutter (flutter)**.
+
+
 </div>
 <div class="tab-pane" id="androidstudio" role="tabpanel" aria-labelledby="androidstudio-tab" markdown="1">