TroubleshootingGuide navbar style

Summary: I also changed the "export" button icon as having two bug icons in the navbar is confusion. lblasa is going to squish all 4 or 5 debug flipper related buttons into one in the near future, so I am not focused on solving this currently

Reviewed By: elboman

Differential Revision: D47468721

fbshipit-source-id: 9492f9feba0df4afaf5b72470cb65e5cefbcb955

desktop/flipper-ui-core/src/sandy-chrome/Navbar.tsx

@@ -35,7 +35,7 @@ import {
   ApiOutlined,
   AppstoreAddOutlined,
   BellOutlined,
-  BugOutlined,
+  ExportOutlined,
   FileExclamationOutlined,
   LayoutOutlined,
   LoginOutlined,
@@ -175,7 +175,7 @@ function ExportEverythingEverywhereAllAtOnceButton() {
       />
       <NUX title="Press this button if you have issues with Flipper. It will collect Flipper debug data that you can send to the Flipper team to get help.">
         <NavbarButton
-          icon={BugOutlined}
+          icon={ExportOutlined}
           label="Rage"
           onClick={() => {
             exportEverythingEverywhereAllAtOnceTracked();