Updated microos installation instructions

[real-user]

Updated the name microos-cockpit to microos_cockpit
Fixes #836

[real-user]

microos-cockpit does not exist, it is named microos_cockpit on OpenSuse Microos.

~> sudo zypper search microos_cockpit
Refreshing service 'NVIDIA'.
Refreshing service 'openSUSE'.
Loading repository data...
Reading installed packages...

S  | Name            | Summary                            | Type
---+-----------------+------------------------------------+--------
   | microos_cockpit | Web based remote system management | pattern


~> sudo zypper search cockpit
Refreshing service 'NVIDIA'.
Refreshing service 'openSUSE'.
Loading repository data...
Reading installed packages...

S  | Name                     | Summary                                                                      | Type
---+--------------------------+------------------------------------------------------------------------------+--------
i  | cockpit                  | Web Console for Linux servers                                                | package
i  | cockpit                  | Pattern for Cockpit, a web based remote system management interface          | pattern
i  | cockpit-bridge           | Cockpit bridge server-side component                                         | package
   | cockpit-devel            | Development files for for Cockpit                                            | package
   | cockpit-doc              | Cockpit deployment and developer guide                                       | package
   | cockpit-firewalld        | Allows Cockpit access through the firewall                                   | package
i  | cockpit-kdump            | Cockpit user interface for kernel crash dumping                              | package
   | cockpit-machines         | Cockpit user interface for virtual machines                                  | package
i  | cockpit-networkmanager   | Cockpit user interface for networking, using NetworkManager                  | package
   | cockpit-packagekit       | Cockpit user interface for packages                                          | package
   | cockpit-packages         | A cockpit module for (un)installing packages                                 | package
i  | cockpit-podman           | Cockpit component for Podman containers                                      | package
i  | cockpit-repos            | A Cockpit module for managing system repositories                            | package
i  | cockpit-selinux          | Cockpit SELinux package                                                      | package
i  | cockpit-storaged         | Cockpit user interface for storage, using udisks                             | package
   | cockpit-subscriptions    | Cockpit module for managing and registering subscriptions                    | package
i  | cockpit-system           | Cockpit admin interface package for configuring and troubleshooting a system | package
i  | cockpit-tukit            | Cockpit module for Transactional Update                                      | package
i  | cockpit-ws               | Cockpit Web Service                                                          | package
i  | cockpit-ws-selinux       | SELinux security policy for cockpit-ws                                       | package
   | microos_cockpit          | Web based remote system management                                           | pattern
i+ | patterns-cockpit         | Pattern for Cockpit, a web based remote system management interface          | package
   | patterns-microos-cockpit | Web based remote system management                                           | package