Fix azdev style

Author: DomAyre

src/confcom/azext_confcom/_help.py

@@ -320,4 +320,4 @@
           text: az confcom fragment attach ./fragment.reg.cose --manifest-tag myregistry.azurecr.io/image:latest
         - name: Attach the output of acifragmentgen to a registry
           text: az confcom acifragmentgen --chain my.cert.pem --key my_key.pem --svn "1" --namespace contoso --feed "test-feed" --input ./fragment_spec.json | az confcom fragment attach --manifest-tag myregistry.azurecr.io/image:latest
-"""
+"""