Fix: RepoCommandLink's text is wrong

The title of the "repo download" link was mistakenly set to "checkout"
during refactoring in commit cbc629f4f4ce6bd9071a540cb026ef8a9d53382c.

Change it to the correct "repo download" title.

Bug: Issue 2093
Change-Id: I4c30d0fedf56942f741edbbfaa7505052e5e370c
1 file changed