Improve contacts documentation

[skjnldsv]

Contacts docs is outdated.
We should improve that :)

https://docs.nextcloud.com/server/stable/user_manual/pim/contacts.html

[BobKircher]

A not in the iOS section should be added:
"Starting with iOS 12, only SSL connections are valid. Disabeling the SSL toggle will not work"

[skjnldsv]

@BobKircher can you add this? :)

[BobKircher]

I will try my best.
I just did a fork.
When I'm done, I will show it to you. OK ?

[skjnldsv]

@BobKircher you can create a pull request and mention me :)

[vatsal1452]

Please Help me How I can I contribute in this project

[vatsal1452]

Sir please guide me How I can made challenge

[BobKircher]

What do you want to contribute?