Update Omarchy Manual (some India and Philippines had no connection to omarchy.org)

[sailoz]

As dicussed in #422
Since then we had a few more..

I do not know the appropriate location to put this..
Perhaps link from Getting Started?

===
if you are stuck and nothing shows when you do
wget -qO- https://omarchy.org/install | bash

Please test your network connectivuty.
ping -c 5 1.1.1.1

if failed, please check your network connection & configuration.

test you have connection to omarchy.org via IPv6.
ping -6 -c 5 omarchy.org

If failed, test if able to ping -4 -c 5 omarchy.org
It will test if IPv4 works than v6

if IPv4 works, following command to see if https works
wget -4qO- https://omarchy.org/install | bash

If it does not work
Please takes following steps

Install git
pacman -Sy git

Create directory to host omarchy files

mkdir ~/.local/share
cd ~/.local/share
git clone https://github.com/basecamp/omarchy

Run omarchy install script.

~/.local/share/omarchy/install.sh

[dhh]

Not really something for us to do here. That's a local network issue.