Replace Silver reference

Replace Silver with Premium in content.

doc/user/operations_dashboard/index.md

@@ -6,19 +6,20 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Operations Dashboard **(PREMIUM)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/5781) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.5. [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/9218) to [GitLab Premium](https://about.gitlab.com/pricing/) in 11.10.
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/5781) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.5.
+> - [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/9218) to [GitLab Premium](https://about.gitlab.com/pricing/) in 11.10.
 
 The Operations Dashboard provides a summary of each project's operational health,
 including pipeline and alert status.
 
-The dashboard can be accessed via the top bar, by clicking **More > Operations**.
+The dashboard can be accessed from the top bar, by clicking **More > Operations**.
 
 ## Adding a project to the dashboard
 
 NOTE:
 For GitLab.com, you can add your project to the Operations Dashboard for free if
 your project is public. If your project is private, the group it belongs to must
-have a [Silver](https://about.gitlab.com/pricing/) plan.
+have a [GitLab Premium](https://about.gitlab.com/pricing/) plan.
 
 To add a project to the dashboard: