A few minor user profile text updates

Like the title says, a few minor user profile text updates, changes probably best seen in the Before/After pics.

Overview tab: ([BEFORE](https://i.imgur.com/B2SsVVe.png) | [AFTER](https://i.imgur.com/9vb3m1r.png))
Comments tab: ([BEFORE](https://i.imgur.com/DSVGvEU.png) | [AFTER](https://i.imgur.com/Dpm77kW.png))
Submissions tab: ([BEFORE](https://i.imgur.com/BHZyosh.png) | [AFTER](https://i.imgur.com/kHEKAVQ.png))