parsed_css column descriptions

Author: max-ostapenko

definitions/output/crawl/parsed_css.js

@@ -7,6 +7,16 @@ publish('parsed_css', {
     clusterBy: ['client', 'is_root_page', 'rank', 'page'],
     requirePartitionFilter: true
   },
+  columns: {
+    date: 'YYYY-MM-DD format of the HTTP Archive monthly crawl',
+    client: 'Test environment: desktop or mobile',
+    page: 'The URL of the page being tested',
+    is_root_page: 'Whether the page is the root of the origin.',
+    root_page: 'The URL of the root page being tested',
+    rank: 'Site popularity rank, from CrUX',
+    url: 'The URL of the request',
+    css: 'The parsed CSS, in JSON format'
+  },
   tags: ['crawl_complete']
 }).preOps(ctx => `
 SET @@RESERVATION='${constants.reservation_id}';