Reverts breaking change

Author: aaronzi

basyx.submodelregistry/basyx.submodelregistry-service-mongodb-storage/src/main/java/org/eclipse/digitaltwin/basyx/submodelregistry/service/configuration/MongoDbConfiguration.java

@@ -47,7 +47,7 @@
 public class MongoDbConfiguration {
 
 
-	@Value("${basyx.submodelregistry.mongodb.collectionName:submodeldescriptors}")
+	@Value("${basyx.submodelregistry.mongodb.collectionName:submodelDescriptor}")
 	public String collectionName;
 
 	@Bean
@@ -73,4 +73,4 @@ private SubmodelRegistryStorage applyFeatures(SubmodelRegistryStorage storage, L
 		return storage;
 	}
 
-}
+}