While reviewing a pull request, I noticed that when I hover the mouse over the [Approve] button in the upper right corner of the web page, it displays the following tool tip text:

  Approve this pull request (Type 'a')

Nice to have a hot key to approve!

I would first recommend lowercasing "Type"; as a result, the tool tip text would read as follows:

  Approve this pull request (type 'a')

When I hover the mouse over the [Approve] button after having approved the pull request, the tool tip text now reads as follows:

  You have approved this pull request (Type 'a')

At first, I was going to recommend removing the text "(Type 'a')" from the end of the tool tip text (since I had already approved the pull request) but then realized that this is a way to unapprove (undo the approval).

In response, therefore, I recommend replacing the text in this scenario with:

  You have approved this pull request (type 'a' to unapprove)

or:

  You have approved this pull request (type 'a' to undo the approval)

or some other wording that elucidates that typing 'a' undoes the current state.