[Ignition] Fix typo in ignition mjsunit status.

BUG=v8:4280
LOG=N
NOTRY=true

Review URL: https://codereview.chromium.org/1429423002

Cr-Commit-Position: refs/heads/master@{#31889}

test/mjsunit/mjsunit.status

@@ -878,7 +878,7 @@
   'regress/regress-419663': [SKIP],
   'regress/regress-4255-4': [SKIP],
   'regress/regress-430201': [SKIP],
-  'regress/regress-430201-b': [SKIP],
+  'regress/regress-430201b': [SKIP],
   'regress/regress-4309-3': [SKIP],
   'regress/regress-4320': [SKIP],
   'regress/regress-4325': [SKIP],