Remove extra lines between region tag and method name (GoogleCloudPlatform#1840)

* Remove extra lines between region tag and method name
* Add newline to fix lint error.

Author: noerog

healthcare/api-client/dicom/dicomweb.py

@@ -45,9 +45,8 @@ def get_session(service_account_json):
 
     return session
 
-# [START healthcare_dicomweb_store_instance]
-
 
+# [START healthcare_dicomweb_store_instance]
 def dicomweb_store_instance(
         service_account_json,
         base_url,