fix: -t flag added in pull translation command (#256)

Author: edx-requirements-bot

Makefile

@@ -50,7 +50,7 @@ push_translations:
 
 # Pulls translations from Transifex.
 pull_translations:
-	tx pull -f --mode reviewed --languages=$(transifex_langs)
+	tx pull -t -f --mode reviewed --languages=$(transifex_langs)
 
 # This target is used by Travis.
 validate-no-uncommitted-package-lock-changes: