DS-1472 Capitalization of Workflow in Submissions & Workflow

This is a title, which means it should be capitalized.

This was committed to dspace-3_x (PR#184), however not to master. It is listed as fixed in 4_x on the release notes.
Merge pull request #374 from misilot/patch-1

DS-1472 Capitalization of Workflow in Submissions & Workflow