docs: Fix a few typos

[timgates42]

There are small typos in:

• deployer/console.py
• deployer/host/base.py
• deployer/host/local.py
• deployer/node/decorators.py
• deployer/run/socket_server.py
• deployer/run/telnet_server.py
• deployer/utils/string_utils.py
• docs/pages/architecture_of_roles_and_nodes.rst
• docs/pages/django-deployment.rst
• docs/pages/internals.rst

Fixes:

• Should read underneath rather than underneat.
• Should read expansion rather than expension.
• Should read several rather than serveral.
• Should read environment rather than enviroment.
• Should read another rather than anothor.
• Should read until rather than untill.

Semi-automated pull request generated by https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md