Always have specmatic.yaml format as the default in the tab view

[harikrishnan83]

Currently the tab view of Specmatic configuration sample code has JSON by default as shown below.

Screenshot

Code

{% tabs config %}
{% tab config specmatic.yaml %}
```yaml
provider: git
repository: https://${TOKEN}@github.com/specmatic/central-contract-repo-private.git
provides:
  - io/specmatic/examples/store/openapi/api_order_v3.yaml

{% endtab %}
{% tab config specmatic.json %}

{
  "provider": "git",
  "repository": "https://${TOKEN}@github.com/specmatic/central-contract-repo-private.git",
  "provides": [
    "io/specmatic/examples/store/openapi/api_order_v3.yaml"
  ]
}

{% endtab %}
{% endtabs %}

Can we update all such code so that specmatic.yaml is shown by default?