Followup to Bug 1171736 - Make linux-l10n actually Platform Linux not Linux64. r=wcosta over IRC

MozReview-Commit-ID: DwWaab4PqLF

--HG--
extra : rebase_source : feef8a5465eef07567226741b70bddcca72d4bef

taskcluster/ci/legacy/tasks/branches/try/job_flags.yml

@@ -35,7 +35,7 @@ builds:
         task: tasks/builds/dbg_linux32.yml
   linux-l10n:
     platforms:
-      - Linux64
+      - Linux
     types:
       opt:
         task: tasks/builds/firefox_l10n_linux32.yml