Format stork-tool help text

The issue was reported by @marcin during 1.10 sanity checks. Source.

The help text for the stork-tool is not formatted properly:

$ ./stork-tool --help
NAME:
   stork-tool - A tool for managing Stork Server.

                   The tool operates in three areas:

                   - Certificate Management - it allows for exporting Stork Server keys, certificates,
                     and tokens that are used to secure communication between the Stork Server
                     and Stork Agents;

                   - Database Creation - it facilitates creating a new database for the Stork Server,
                     and a user that can access this database with a generated password;

                   - Database Migration - it allows for performing database schema migrations,
                     overwriting the db schema version and getting its current value.

USAGE:
   stork-tool [global options] command [command options] [arguments...]

There is an exceptionally big indentation of the paragraph starting with "The tool operates in...."