chore: fix typos after validation refactor (#4553)

Author: wolf4ood

data-protocols/dsp/dsp-spi/src/main/java/org/eclipse/edc/protocol/dsp/spi/type/DspTransferProcessPropertyAndTypeNames.java

@@ -21,7 +21,7 @@
  */
 public interface DspTransferProcessPropertyAndTypeNames {
 
-    String DSPACE_TYPE_TRANSFER_REQUEST_MESSAGE_TERM = DSPACE_SCHEMA + "TransferRequestMessage";
+    String DSPACE_TYPE_TRANSFER_REQUEST_MESSAGE_TERM = "TransferRequestMessage";
     String DSPACE_TYPE_TRANSFER_REQUEST_MESSAGE_IRI = DSPACE_SCHEMA + DSPACE_TYPE_TRANSFER_REQUEST_MESSAGE_TERM;
     String DSPACE_TYPE_TRANSFER_START_MESSAGE_TERM = "TransferStartMessage";
     String DSPACE_TYPE_TRANSFER_START_MESSAGE_IRI = DSPACE_SCHEMA + DSPACE_TYPE_TRANSFER_START_MESSAGE_TERM;