fix: remove need for external ocis-net network

[rpocklin]

Description

Tidy up the deployments/examples/ocis_individual_services example so that the instructions work.

Motivation and Context

No need for manually creating a network via docker create network ocis-net (not in example instructions).

How Has This Been Tested?

Tested in Windows 10 / WSL 2 Ubuntu and works as expected.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.