fix test

Author: akuhlens

flang/test/Intrinsics/sizeof.f90 renamed to flang/test/Semantics/sizeof.f90

@@ -5,6 +5,6 @@
   else
     print *, "fail"
   end if
-  ERROR! unknown keyword argument to intrinsic 'sizeof'
+  !ERROR: unknown keyword argument to intrinsic 'sizeof'
   print *, sizeof(a=a)
 end