Update Jakarta Persistence chapter for Persistence 3.1 (Jakarta EE 10)

[kito99]

Current tutorial chapters for Persistence: https://jakartaee.github.io/jakartaee-documentation/jakartaee-tutorial/current/persist/persistence-intro/persistence-intro.html

For background, here are the changes for Servlet 6.0:

Release notes: https://jakarta.ee/specifications/persistence/3.1/

Please do the following:

• Review the documentation and look for anything that needs to be changed/updated
• Add a NOTE to the examples for using the EntityManagerFactory and EntityManager interfaces saying that they now implement AutoClosable, so they can be used with try-with-resources blocks (without explicitly closing them).
• Update the spec URL (https://jakartaee.github.io/jakartaee-documentation/jakartaee-tutorial/current/persist/persistence-intro/persistence-intro.html#_further_information_about_persistence) point to the Persistence 3.1 spec: https://jakarta.ee/specifications/persistence/3.1/.
• Remove reference to GlassFish (we are de-emphasizing GlassFish in this tutorial)
• Remove EclipseLink documentation link (not really necessary; you can get to it from the main EclipseLink url)

You can find the documentation here: src/main/antora/modules/persist/pages