Rename a few more isDUPs that the vscode refactor tool missed

assets/src/apps/v2/dup.tsx

@@ -38,7 +38,7 @@ import PageLoadNoData from "Components/v2/dup/page_load_no_data";
 import NoData from "Components/v2/dup/no_data";
 import OvernightDepartures from "Components/v2/dup/overnight_departures";
 import { usePlayerName } from "Hooks/outfront";
-import { isDUP } from "Util/outfront";
+import { isDup } from "Util/outfront";
 
 const TYPE_TO_COMPONENT = {
   screen_normal: NormalScreen,
@@ -123,7 +123,7 @@ const responseMapper: ResponseMapper = (apiResponse) => {
 };
 
 const App = (): JSX.Element => {
-  if (isDUP()) {
+  if (isDup()) {
     const playerName = usePlayerName()!;
     const id = `DUP-${playerName.trim()}`;
     return (

assets/src/components/v2/dup/README.md

@@ -1,7 +1,7 @@
 # DUP app packaging v2
 
 - Ensure [Corsica](https://hexdocs.pm/corsica/Corsica.html) is used on the server to allow CORS requests (ideally limited to just the DUP-relevant routes). It should already be configured at [this line](/lib/screens_web/controllers/v2/screen_api_controller.ex#L9) in the API controller--if it is, you don't need to do anything for this step.
-- Double check that any behavior specific to the DUP screen environment happens inside of an `isDUP()` or `isOFM()` check. This includes:
+- Double check that any behavior specific to the DUP screen environment happens inside of an `isDup()` or `isOFM()` check. This includes:
   - `buildApiPath` in use_api_response.tsx should return a full URL for the API path: prefix `apiPath` string with "https://screens.mbta.com".
   - `imagePath` in util.tsx should return relative paths (no leading `/`).
 - Create priv/static/dup-app.html if it doesn’t already exist. Copy paste the following contents in: