Update wiki metric definition file

config/metrics/counts_all/20210216183023_wiki_pages_view.yml

 ---
 data_category: optional
 key_path: counts.wiki_pages_view
-description: ''
-product_section: ''
-product_stage: ''
-product_group: ''
-product_category: ''
+description: Total number of wiki page views
+product_section: dev
+product_stage: create
+product_group: group::editor
+product_category: wiki
 value_type: number
 status: data_available
+milestone: "13.3"
+introduced_by_url: "https://gitlab.com/gitlab-org/gitlab/-/merge_requests/38784"
 time_frame: all
-data_source: database
+data_source: redis
 distribution:
 - ce
+- ee
 tier:
 - free
-skip_validation: true
+- premium
+- ultimate
 performance_indicator_type: []