improve and fix descriptions of commands

                   
|Q            |A  |
|---          |---|
|Bug Fix?     |n  |
|New Feature? |n  |
|BC Breaks?   |n  |
|Deprecations?|n  |
|Tests Pass?  |n  |
|Fixed Tickets|   |
|License      |MIT|
|Doc PR       |   |
                   


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here is the link for more info https://github.com/cordoval/dflydev-embedded-composer/blob/improve-descriptions/src/Dflydev/EmbeddedComposer/Console/Command/UpdateCommand.php#L33-L41