docs: add consistent snippets for network creation #2703
Merged
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What does this PR do?
It separates the tests from the testable examples for the network creation, updating the docs to the new examples.
The new testable examples contain clearer code snippets for creating networks with and without options.
Render URL: https://deploy-preview-2703--testcontainers-go.netlify.app/features/creating_networks/#__tabbed_1_1
Why is it important?
Try to avoid confusing users reading our docs, as the default snippet used the internal option for creating networks, and this could cause issues when accessing the ports of containers in that internal network.
Follow-ups
Considering deprecating the functional option to make a network internal (which great power...)