Challenge 14 Docs: fix run test command (#1304)

Author: StefH

docs/src/content/docs/challenges/rxjs/14-race-condition.md

@@ -26,5 +26,5 @@ Correct your application to pass the test
 
 ## Run the test
 
-HEADLESS : `npx nx component-test rxjs-race-condition`
-WATCH MODE : `npx nx component-test rxjs-race-condition --watch`
+HEADLESS : `npx nx test rxjs-race-condition`
+WATCH MODE : `npx nx test rxjs-race-condition --watch`