fix fields, document (#1593)

apps/wizard/templating/cookiecutter/garden/{{cookiecutter.namespace}}/{{cookiecutter.version}}/{{cookiecutter.short_name}}.meta.yml

@@ -1,28 +1,43 @@
+# NOTE: To learn more about the fields, hover over their names.
+
+
+# Learn more about the available fields:
+# http://localhost:8000/architecture/metadata/reference-dataset/
 dataset:
   update_period_days: {{cookiecutter.update_period_days}}
 
+
+# Learn more about the available fields:
+# http://localhost:8000/architecture/metadata/reference-tables/
 tables:
   {{cookiecutter.short_name}}:
     variables:
       # testing_variable:
       #   title: Testing variable title
       #   unit: arbitrary units
       #   short_unit: au
-      #   description: Full description of testing variable.
       #   description_short: Short description of testing variable.
+      #   description_key: List of key points about the indicator.
       #   description_from_producer: Description of testing variable from producer.
       #   processing_level: minor
+      #   presentation:
+      #     title_public:
+      #     title_variant:
+      #     attribution:
+      #     producer_short:
+      #     topic_tags_links:
+      #     faqs
+      #     grapher_config
       #   display:
       #     name: Testing variable
+      #     description:
+      #     isProjection: false
       #     entityAnnotationsMap: Test annotation
       #     numDecimalPlaces: 0
       #     conversionFactor: 1
-      #   presentation:
-      #     grapher_config
-      #     title_public
-      #     title_variant
-      #     producer_short
-      #     attribution
-      #     topic_tags_links
-      #     faqs
-      #     key_info_text
+      #     tolerance: 0
+      #     yearIsDay: false
+      #     color:
+      #     includeInTable:
+      #     tableDisplay:
+