[DOCS] improve cmd docs helper

[nicolastakashi]

This pull request focuses on improving the documentation and command descriptions for the poctl tool, enhancing clarity and providing more detailed explanations of its functionalities. The most important changes include updated descriptions for the analyze and create commands, as well as revisions to the overall tool description.

Documentation Improvements:

• Documentation/commands/analyze/index.md: Enhanced the description of the analyze command to emphasize its role in assessing the health of Prometheus Operator resources and providing actionable insights.

Command Descriptions:

• cmd/analyze.go: Updated the Short and Long descriptions of the analyze command to highlight its capabilities in detecting misconfigurations and optimizing monitoring setups.
• cmd/create.go: Revised the Short and Long descriptions of the create command to better explain its function in generating Prometheus Operator resources and simplifying configuration processes.

README Enhancements:

• README.md: Improved the overall description of poctl, detailing its purpose in managing Prometheus Operator resources and streamlining deployment, troubleshooting, and validation processes. [1] [2]

Root Command Description:

• cmd/root.go: Updated the Short and Long descriptions of the root command to reflect the enhanced capabilities and user benefits of using poctl.