storewolf: version argument expects semver value

[samuelkarp]

Issue number:
None

Description of changes:
The --version argument expects a valid semver value as input. Version numbers without three parts fail with a message saying "Expected dot". This commit updates the documentation to match the behavior of storewolf.

Testing done:
Created a local datastore with a semver version. Attempting to create a datastore with "0.1" as the version failed with the following error:

Invalid version: Expected dot

Usage: ./storewolf
            --data-store-base-path PATH
            [ --version X.Y ]
            [ --log-level trace|debug|info|warn|error ]

        If --version is not given, the version will be pulled from /etc/os-release.
        This is used to set up versioned symlinks in the data store base path.

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[tjkirch]

I'd like to see a bit of clarification in the commit summary/description that this is a documentation change, not a code change; I was confused because it sounded like we were changing behavior or fixing a bug.

[samuelkarp]

I'd like to see a bit of clarification in the commit summary/description that this is a documentation change, not a code change; I was confused because it sounded like we were changing behavior or fixing a bug.

Updated, thanks!

[jahkeup]

1.2.3-thanks 👏