Drop ce from ce stories titles

What does this MR do and why?

Drops the ce from the titles of the stories as per our naming instructions: https://docs.gitlab.com/ee/development/fe_guide/storybook.html#adding-components-to-storybook.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Before	After

How to set up and validate locally

yarn storybook:install
yarn storybook:start