Fixed an incorrect criticism of git in the README.

It's true that parts of git are genuinely difficult to use, so
we don't need to overstate that difficulty in order to state the
value proposition of lazygit. If `git add -p` can't split a hunk
any further, one is not _completely_ stuck, but one does need to
edit the hunk in a way that, after years, I still need a few
attempts to get right. The fact that many otherwise-experienced
git users don't even know that one can do that is itself a
testament to the UX problems that lazygit is trying to address.

README.md

@@ -2,7 +2,7 @@
 
 A simple terminal UI for git commands, written in Go with the [gocui](https://github.com/jroimartin/gocui 'gocui') library.
 
-Rant time: You've heard it before, git is _powerful_, but what good is that power when everything is so damn hard to do? Interactive rebasing requires you to edit a goddamn TODO file in your editor? *Are you kidding me?* To stage part of a file you need to use a command line program stepping through each hunk and if a hunk can't be split down any further but contains code you don't want to stage, bad luck? *Are you KIDDING me?!* Sometimes you get asked to stash your changes when switching branches only to realise that after you switch and unstash that there weren't even any conflicts and it would have been fine to just checkout the branch directly? *YOU HAVE GOT TO BE KIDDING ME!*
+Rant time: You've heard it before, git is _powerful_, but what good is that power when everything is so damn hard to do? Interactive rebasing requires you to edit a goddamn TODO file in your editor? *Are you kidding me?* To stage part of a file you need to use a command line program stepping through each hunk and if a hunk can't be split down any further but contains code you don't want to stage, you have to edit a diff in a way that almost nobody gets right the first time? *Are you KIDDING me?!* Sometimes you get asked to stash your changes when switching branches only to realise that after you switch and unstash that there weren't even any conflicts and it would have been fine to just checkout the branch directly? *YOU HAVE GOT TO BE KIDDING ME!*
 
 If you're a mere mortal like me and you're tired of hearing how powerful git is when in your daily life it's a powerful pain in your ass, lazygit might be for you.