Update docker-compose example in deployment docs

[larsreinhardt]

Removed version specification from docker-compose example, as its been removed from docker-compose

Category:

Documentation

Overview

Removed "version:" from docker-compose example, as it is depcrecated from docker-compose. Docker-compose will throw warnings, but will start with the version specified

Issue Number (if applicable) #00

New Vars (if applicable)

If you've added any new build scripts, environmental variables, config file options, dependency or devDependency, please outline here

Screenshot (if applicable)

If you've introduced any significant UI changes, please include a screenshot

Code Quality Checklist (Please complete)

• Not applicable - pure documentation update
• All changes are backwards compatible
• All lint checks and tests are passing
• There are no (new) build warnings or errors
• (If a new config option is added) Attribute is outlined in the schema and documented
• (If a new dependency is added) Package is essential, and has been checked out for security or performance
• (If significant change) Bumps version in package.json

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