Merge branch 'mdrussell-master-patch-84294' into 'master'

Correct metric description

See merge request gitlab-org/gitlab!82409

config/metrics/counts_all/20210514141520_project_imports_total.yml

 ---
 data_category: optional
 key_path: usage_activity_by_stage.manage.project_imports.total
-description: 'Count number of projects imported monthly'
+description: Number of projects imported
 product_section: dev
 product_stage: manage
 product_group: group::import