[ENH] Markdown for Bep032

[Peyman-N]

--- PLEASE READ AND DELETE THE TEXT BELOW BEFORE OPENING THE PULL REQUEST ---

See the CONTRIBUTING guide. Specifically:

• Please keep the title of your Pull Request (PR) short but informative - it will appear in the changelog.

• If you do not want a PR to appear in the changelog, it must receive the exclude-from-changelog label.

• Please ensure your name is credited
  on our Contributors appendix.
  To add your name, please edit our Contributors wiki
  and add your name with the type of contribution.
  For assistance, please tag @bids-standard/maintainers.

• Use one of the following prefixes in the title of your PR:

  • [ENH] - enhancement of the specification that adds a new feature or support for a new data type
  • [FIX] - fix of a typo or language clarification
  • [INFRA] - changes to the infrastructure automating the specification release (for example building HTML docs)
  • [SCHEMA] - changes to the BIDS schema and/or related code
  • [MISC] - everything else including changes to the file listing contributors

• If you are opening a PR to obtain early feedback,
  but the changes are not ready to be merged (also known as a "Work in Progress" PR),
  please use a Draft PR.

• After opening the PR, our continuous integration services will automatically check your contribution
  for formatting errors and render a preview of the BIDS specification with your changes.
  To see the checks and preview, scroll down and click on the show all checks link.
  From the list:

  • select the Details link of the docs/readthedocs.org:bids-specification check to see the HTML preview of the BIDS specification.
  • select the Details link of the Check the rendered PDF version here! check to see the PDF preview of the BIDS specification.

• If you are updating the schema and you need to subsequently make changes to the bidsschematools code (validation, tests, rendering),
  this means your PR probably introduces a compatibility breaking change
  and you should increment the minor version (the second number) in bids-specification/src/schema/SCHEMA_VERSION.

• If you are opening a PR for a BIDS extension proposal (BEP),
  make sure that your top message contains the following notes

Note

We meet regularly to discuss this BEP

Next meeting: insert date on URL to join

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Tip

[HTML preview of this BEP](insert URL to HTML preview once available)

--- PLEASE READ AND DELETE THE TEXT ABOVE BEFORE OPENING THE PULL REQUEST ---

[yarikoptic]

Thank you! I left only some styling/formatting recommendations for now.

[yarikoptic]

check other examples in the spec. E.g.

bids-specification/src/modality-specific-files/task-events.md

Line 212 in 7ddb7be

Example of the content of the TSV file:

they should not be formatted into a table