[Task]: Document Jinja templatization for yaml

[robertwb]

What needs to happen?

This is mentioned nowhere in https://beam.apache.org/documentation/sdks/yaml/ or our other yaml docs.

Issue Priority

Priority: 2 (default / most normal work should be filed as P2)

Issue Components

• [ ] Component: Python SDK
• [ ] Component: Java SDK
• [ ] Component: Go SDK
• [ ] Component: Typescript SDK
• [ ] Component: IO connector
• [X] Component: Beam YAML
• [ ] Component: Beam examples
• [ ] Component: Beam playground
• [ ] Component: Beam katas
• [X] Component: Website
• [ ] Component: Infrastructure
• [ ] Component: Spark Runner
• [ ] Component: Flink Runner
• [ ] Component: Samza Runner
• [ ] Component: Twister2 Runner
• [ ] Component: Hazelcast Jet Runner
• [ ] Component: Google Cloud Dataflow Runner

[robertwb]

@Polber

[mravi]

@robertwb @Polber can I take this issue ?

[Polber]

@robertwb @Polber can I take this issue ?

@mravi Feel free to take this on! Thanks

[mravi]

.take-issue

[robertwb]

Sorry, @mravi , I just now saw that you had signed up to do this. (I started writing the docs when I realized there was no place to document the new datetime availability I had just added.)

[mravi]

thanks for the heads-up @robertwb ! please feel free to take the issue