Update backbone entry

`lmllrjr/backbone-zsh-prompt` has moved to `42LM/backbone-zsh-prompt`

Signed-off-by: Joe Block <[email protected]>

README.md

@@ -1916,7 +1916,7 @@ If you're using [Antigen](https://github.com/zsh-users/antigen), you can test th
 - [avit-mod](https://github.com/zlsun/avit-mod) - Modified version of oh-my-zsh's [avit](https://github.com/ohmyzsh/ohmyzsh/blob/master/themes/avit.zsh-theme) theme.
 - [avoleo](https://github.com/flameleo11/avoleo-zsh-theme) - Features a date and time prompt for each command, as well as a command number in history. In addition, it uses special symbols '⠾' and '⡶' to display `git` information if applicable in the current path. It also supports custom colors based on the Gnome-Terminal default color palette.
 - [aws](https://github.com/chiemerieezechukwu/aws-zsh-theme) - Based on [robbyrussell](https://github.com/ohmyzsh/ohmyzsh/wiki/Themes#robbyrussell), with an extra decorator to show your `$AWS_PROFILE` when it is set.
-- [backbone](https://github.com/lmllrjr/backbone-zsh-prompt) - A bare minimum single file prompt, fast as a roadrunner MEEP! MEEP. Includes `git` status and current directory decorations.
+- [backbone](https://github.com/42LM/backbone-zsh-prompt) - A bare minimum single file prompt, fast as a roadrunner MEEP! MEEP. Includes `git` status and current directory decorations.
 - [bahman](https://github.com/bahmanworld/bahman-zsh-theme) - Requires Nerd Font. Has `git` status decorator.
 - [banana](https://github.com/sorcererxw/banana-zsh-theme) - Includes `git` status decorations and current directory.
 - [bandit](https://github.com/Holger-Will/zsh_bandit) - Another Powerline variant.