fix moore test

Author: makslevental

test/Dialect/Moore/types-errors.mlir

@@ -1,12 +1,12 @@
 // RUN: circt-opt --verify-diagnostics --split-input-file %s
 
 // -----
-// expected-error @below {{invalid kind of Type specified}}
+// expected-error @below {{invalid kind of type specified}}
 // expected-error @below {{parameter 'elementType' which is to be a `PackedType`}}
 unrealized_conversion_cast to !moore.array<4 x string>
 
 // -----
-// expected-error @below {{invalid kind of Type specified}}
+// expected-error @below {{invalid kind of type specified}}
 // expected-error @below {{parameter 'elementType' which is to be a `PackedType`}}
 unrealized_conversion_cast to !moore.open_array<string>