minor typo in help.obsidian.md

[CHOCOLVT]

Helloo!

First of all, thank you very much for offering the world such an amazing tool!

I planned to purchase Obsidian Sync so I started reading the doc, which is well designed :)
In the first line of the section Sync settings are not synced of the page Select files and settings to sync, I noticed a minor typo: the word "each" appears twice in a row, therefore, I chose to notify you.:
Sync settings are not synced so that each each device can be separately configured according to your needs.

Thank you for all your work!
I really enjoy Obsidian!!

P.S.: I'll definitely try Obsidian Sync. ;)

[sigrunixia]

taken care of in #772