Follow-up from "MR Approvals documentation Revamp"

The following discussions from !23861 (merged) should be addressed:

• @eread started a discussion:

    of reviewers, through [Approval rules](#approval-rules).

• @eread started a discussion:

  - [As project defaults](#adding--editing-a-default-approval-rule).
  - [Per merge request](#editing--overriding-approval-rules-per-merge-request).

  These, to me, go far enough to take a period.

• @eread started a discussion:

  1. Navigate to your project's **{settings}** **Settings > General** and expand **Merge request approvals**.

• @eread started a discussion:

     - (Optional) Click the Remove button (**{remove}**) next to a group or user to delete it from

• @eread started a discussion:

  **{settings}** **Settings > General** and expanding **Merge request approvals**.

• @eread started a discussion:

  1. Click **Save changes**.

• @eread started a discussion:

  1. Click **Save changes**.