Add & use custom Markdoc component for "Try it!" and "Query example transaction" buttons

[mDuo13]

Add a new Markdoc component for "Try it!" links, so they show up as a button again, and a related component for "Query example transaction" links. The component automatically provides a translatable label. The "Query example transactions" component uses APIv2 by default. Additionally:

• I updated the existing instances of these to use the new syntax in both English and Japanese.
• I added a couple new instances for methods and transactions that had examples available.
• I documented the new components on the Contribute Documentation page. I made a couple other minor formatting edits to that page and mentioned a couple of our other custom Markdoc components while I was there.
• I added the manifest and version commands to the WebSocket API tool using the examples from their respective documentation pages. I also changed the ledger method in the WS tool to use API v2.
• I switched the order of AccountSet and AccountDelete in the sidebar to make them correctly alphabetical like the other transaction types.

[DennisDawson]

LGTM