[Follow up] Trino getting started docker compose

[kevinjqliu]

Description

This PR

• Renames getting-started/trino/docker-compose-trino.yml to getting-started/trino/docker-compose.yml
• Fix minor style and grammar issues

Follow up to #42

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• Documentation update
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Followed README, ran on docker and Trino CLI works

Checklist:

Please delete options that are not relevant.

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• If adding new functionality, I have discussed my implementation with the community using the linked GitHub issue

[flyrain]

Thanks @kevinjqliu for the fix.