Unify the steps about creating pleroma user home directory in the docs
When I tried to have my pleroma instance migrate from source build version to OTP releases-based installation, docs caused me confusing about pleroma user home directory settings.
In Installing on Debian Based Distributions, doc says sudo useradd -r -s /bin/false -m -d /var/lib/pleroma -U pleroma
to create a user. I installed pleroma with this method before.
But in Installing on Linux using OTP releases, doc says adduser --system --shell /bin/false --home /opt/pleroma pleroma
. And the migraiton guide assumes users take that step.
So I had to change pleroma user home directory by usermod -d /opt/pleroma pleroma
while migrating the pleroma installation.
Would you mind considering the unified approach to this home directory settings between docs?