Update first line on "Alt + ←" and "Alt + →" about pure HOT 4 CLOSED

@rafaelrinaldi I’ll do a PR, no problems👌 I’ve managed to fix this issue, but I’ve also noticed there is something fishy going on (couldn’t help myself, sorry, I’m new to fish 😅).
Is there any reason we evoking pre_prompt through event handler? Because, it seems, it isn’t called when going through directory history. It is also not called on the terminal opening (at least for me with Terminal.app on macOS) which I believe is not intended behavior.

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@schrodincat Thanks for your suggestion. I had no idea this was possible. We will look into supporting this feature on pure.

In the meantime feel free to submit a PR if you feel like it.

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Could you create a dedicated PR for this? Having a smaller scope help review faster and release more frequently 👍

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@edouard-lopez no, I don’t think so, the underlying issue is the same as for #68, so if you fix one, you fix other automatically...

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