[Minor] ['Typo] Combined (combine) on mouse hover

[o-data]

v.0.0.3

A very small 'bug' that is so minor I thought I could try to do a Pull Request for but I can't find where the code is :(

Anyway on popup, the original view "List" is uppercase, so icon popup for "combine" should be Title Case and written as "Combined" too. Here is a screenshot for reference:

PS: Love the style, it make reading email on wide-screen desktop easier.

[mozkomor05]

Thanks