Update help description for the tool

[Surendra Pathak]

[Text marked in bold below must be added to the help]

Text:
sbomex help

SBOM Explorer (sbomex) is a command line utility to help query and fetch Interlynk's public SBOM repository. The tool is intended to help familiarize with the specifications and formats of common SBOM standards and the quality of produced SBOMs (See sbomqs). The underlying repository is updated periodically with SBOMs from a variety of sources built with many tools

Usage:
sbomex [command]

Available Commands:
completion Generate the autocompletion script for the specified shell
fetch downloads specified SBOM from the repository and prints to the screen
help Help about any command
search finds SBOM in the repository that matches the filtering criteria

Flags:
-h, --help help for sbomex
-t, --toggle Help message for toggle

Use "sbomex [command] --help" for more information about a command.