fix: correct storage alias keys to match UPPER_WORDS class names

The 9 storage aliases in config.py used Title Case keys (Obs, Cdn,
Evs, ...) but UPPER_WORDS causes autogen to produce uppercase class
names (OBS, CDN, EVS, ...), resulting in NameError at import time.
Align alias keys and regenerated storage.py references accordingly.

config.py

@@ -524,15 +524,15 @@ ALIASES = {
         "security": {
         },
         "storage": {
-            "Obs": "ObjectStorageService",
-            "Cdn": "ContentDeliveryNetwork",
-            "Evs": "ElasticVolumeService",
-            "Sfs": "StorageFileSystem",
-            "Csbs": "CloudServerBackupService",
-            "Des": "DataExpressService",
-            "Dess": "DedicatedEnterpriseStorageService",
-            "Vbs": "VolumeBackupService",
-            "Dss": "DedicatedStorageService",
+            "OBS": "ObjectStorageService",
+            "CDN": "ContentDeliveryNetwork",
+            "EVS": "ElasticVolumeService",
+            "SFS": "StorageFileSystem",
+            "CSBS": "CloudServerBackupService",
+            "DES": "DataExpressService",
+            "DESS": "DedicatedEnterpriseStorageService",
+            "VBS": "VolumeBackupService",
+            "DSS": "DedicatedStorageService",
         },
         "container": {
             "AOS": "ApplicationOrchestrationService",

diagrams/huaweicloud/storage.py

@@ -46,12 +46,12 @@ class VBS(_Storage):
 # Aliases
 
 
-ObjectStorageService = Obs
-ContentDeliveryNetwork = Cdn
-ElasticVolumeService = Evs
-StorageFileSystem = Sfs
-CloudServerBackupService = Csbs
-DataExpressService = Des
-DedicatedEnterpriseStorageService = Dess
-VolumeBackupService = Vbs
-DedicatedStorageService = Dss
+ObjectStorageService = OBS
+ContentDeliveryNetwork = CDN
+ElasticVolumeService = EVS
+StorageFileSystem = SFS
+CloudServerBackupService = CSBS
+DataExpressService = DES
+DedicatedEnterpriseStorageService = DESS
+VolumeBackupService = VBS
+DedicatedStorageService = DSS