Rectify jsonnet code snippets

[aeneasr]

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• [X] I could not find a solution in the existing issues, docs, nor discussions.
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Describe the bug

As discussed in https://github.com/ory/docs/pull/969, please rectify the language for all code snippets which are JsonNet

Reproducing the bug

See #969

Relevant log output

No response

Relevant configuration

No response

Version

master

On which operating system are you observing this issue?

No response

In which environment are you deploying?

No response

Additional Context

No response