bug 1392803 - fix bm-r. r=aki

MozReview-Commit-ID: 87Zdbh7o3lH

--HG--
extra : rebase_source : 9dcab195a8ce5cf1ec39b7333f32aa4cfac8b3b0

taskcluster/taskgraph/util/scriptworker.py

@@ -99,7 +99,8 @@ BEETMOVER_SCOPE_ALIAS_TO_TARGET_TASK = [[
         'nightly_fennec',
         'nightly_linux',
         'nightly_macosx',
-        'nightly_win',
+        'nightly_win32',
+        'nightly_win64',
         'nightly_desktop',
         'mozilla_beta_tasks',
         'mozilla_release_tasks',