Fix alt text typo

Co-authored-by: Shati Patel <42641846+shati-patel@users.noreply.github.com>

Author: ethanpalm

data/reusables/desktop/click-discard.md

@@ -8,6 +8,6 @@
 
   {% windows %}
 
-  ![Restore stashed changes button](/assets/images/help/desktop/windows-discard-stashed-changes-button.png)
+  ![Discard stashed changes button](/assets/images/help/desktop/windows-discard-stashed-changes-button.png)
 
   {% endwindows %}