[Documentation] Fixed logo customization

[maciek-wozniak]

Q	A
Branch?	1.9
Bug fix?	no
New feature?	no
BC breaks?	no
Deprecations?
Related tickets
License	MIT

Fixed path to logo template file

[Zales0123]

In fact, we could even mention, it can be customized by changing the configuration of sylius.shop.layout.header.grid UI event, but still, this change definitely fixes the bug :)

[Zales0123]

The base of this pull-request was changed, you need fetch and reset your local branch
if you want to add new commits to this pull request. Reset before you pull, else commits
may become messed-up.

Unless you added new commits (to this branch) locally that you did not push yet,
execute git fetch origin && git reset "docs/fixing-logo-customization" to update your local branch.

Feel free to ask for assistance when you get stuck 👍

[CoderMaggie]

Thanks, @maciek-wozniak! 🎉 Congrats on your first contribution to Sylius 💪🏼