doc: ms azure collector: more precise requirement name

use the precise name of the dependency of the Microsoft CTIP requirement
https://pypi.org/project/azure-storage-blob/

Author: wagner-intevation

intelmq/bots/collectors/microsoft/collector_azure.py

@@ -36,7 +36,7 @@ class MicrosoftAzureCollectorBot(CollectorBot, CacheMixin):
 
     def init(self):
         if ContainerClient is None or create_configuration is None:
-            raise MissingDependencyError("azure.storage", version='>=12.0.0')
+            raise MissingDependencyError("azure-storage-blob", version='>=12.0.0')
 
         self.config = create_configuration(storage_sdk='blob')
         if hasattr(self, 'https_proxy'):