[embedded] Fix typo 'alllocation' in diagnostic message

Author: kubamracek

include/swift/AST/DiagnosticsSIL.def

@@ -367,7 +367,7 @@ ERROR(embedded_swift_metatype,none,
 ERROR(embedded_swift_allocating_type,none,
       "cannot use allocating type %0 in -no-allocations mode", (Type))
 ERROR(embedded_swift_allocating,none,
-      "cannot use alllocating type in -no-allocations mode", ())
+      "cannot use allocating type in -no-allocations mode", ())
 NOTE(performance_called_from,none,
       "called from here", ())