fix: Update workflow_basic.tf.erb (GoogleCloudPlatform#8369)

mmv1/templates/terraform/examples/workflow_basic.tf.erb

@@ -9,30 +9,31 @@ resource "google_workflows_workflow" "<%= ctx[:primary_resource_id] %>" {
   description   = "Magic"
   service_account = google_service_account.test_account.id
   source_contents = <<-EOF
-  # This is a sample workflow, feel free to replace it with your source code
+  # This is a sample workflow. You can replace it with your source code.
   #
   # This workflow does the following:
   # - reads current time and date information from an external API and stores
-  #   the response in CurrentDateTime variable
+  #   the response in currentTime variable
   # - retrieves a list of Wikipedia articles related to the day of the week
-  #   from CurrentDateTime
+  #   from currentTime
   # - returns the list of articles as an output of the workflow
-  # FYI, In terraform you need to escape the $$ or it will cause errors.
+  #
+  # Note: In Terraform you need to escape the $$ or it will cause errors.
 
   - getCurrentTime:
       call: http.get
       args:
-          url: https://us-central1-workflowsample.cloudfunctions.net/datetime
-      result: CurrentDateTime
+          url: https://timeapi.io/api/Time/current/zone?timeZone=Europe/Amsterdam
+      result: currentTime
   - readWikipedia:
       call: http.get
       args:
           url: https://en.wikipedia.org/w/api.php
           query:
               action: opensearch
-              search: $${CurrentDateTime.body.dayOfTheWeek}
-      result: WikiResult
+              search: $${currentTime.body.dayOfWeek}
+      result: wikiResult
   - returnOutput:
-      return: $${WikiResult.body[1]}
+      return: $${wikiResult.body[1]}
 EOF
 }