Correct README based on feedback of issue #1374

[shivathapaa]

Overview

This pull request addresses feedback (PR #1376) and makes corrections to the README file based on the discussions in issue #1374.

Related Issue / Discussion

As per feedback based on issue: #1374

• Made corrections to the README file to address the feedback and suggestions provided.
• Improved the introduction to accurately describe the role of pygeoapi.
• Included a link to the SensorThings standard for additional reference.
• Corrected the number of available STA examples, and moved the Docker Compose description to Additional Information.

These changes resolve issue #1374 and ensure that the README accurately reflects the project's functionality.

Additional Information

• I changed the title for more clarity, "Setting up a Pygeoapi Server with SensorThings (STA) Using Docker Compose"
• Feel free to provide feedback or ask for any clarifications if needed.

Contributions and Licensing

(as per https://github.com/geopython/pygeoapi/blob/master/CONTRIBUTING.md#contributions-and-licensing)

• I'd like to contribute [feature X|bugfix Y|docs|something else] to pygeoapi. I confirm that my contributions to pygeoapi will be compatible with the pygeoapi license guidelines at the time of contribution.
• I have already previously agreed to the pygeoapi Contributions and Licensing Guidelines

Acknowledgments:

Thanks, @doublebyte1, for your continued support. I've resolved the issue by closing and reopening the pull request. Apologies for any inconvenience, but this has been a valuable learning for me. :)