Update test/e2e/terminal.test.ts

Co-authored-by: Asher <[email protected]>

Author: jsjoeio

test/e2e/terminal.test.ts

@@ -34,7 +34,7 @@ test.describe("Integrated Terminal", () => {
     // because Playwright doesn't fully support ES modules from
     // the erorrs I'm seeing
     tmpFolderPath = fs.mkdtempSync(path.join(tmpdir(), "code-server-test"))
-    tmpFile = `${tmpFolderPath}${path.sep}${testFileName}`
+    tmpFile = path.join(tmpFolderPath, testFileName)
   })
 
   test.afterEach(async () => {