fix: name the vice CMD drive ROMs as held

dos2000 and dos4000 are the FD-2000 and FD-4000 v1.40 dumps (cs 33cc6f,
fd 350022, MAME's hashes) that VICE 3.8 opens as dos2000-cs-33cc6f.bin
and dos4000-fd-350022.bin, as c64-emu already declares.

emulators/vice-standalone.yml

@@ -111,6 +111,8 @@ notes: |
 files:
   # CMD drive ROMs. Named by the drive resources, not part of the release.
   - name: "dos2000-cs-33cc6f.bin"
+    aliases:
+      - "dos2000"
     path: "DRIVES/dos2000-cs-33cc6f.bin"
     required: false
     min_size: 32768
@@ -119,6 +121,8 @@ files:
     source_ref: "vice/src/drive/driverom.h:47, vice/src/drive/driverom.h:95, vice/src/drive/iec/iec-resources.c:331, vice/src/drive/iec/iecrom.c:136-137"
 
   - name: "dos4000-fd-350022.bin"
+    aliases:
+      - "dos4000"
     path: "DRIVES/dos4000-fd-350022.bin"
     required: false
     min_size: 32768