Add gradle and shell-session for syntax highlighting in Docusaurus

[josh-wong]

Description

This PR adds gradle and shell-session as languages that support syntax highlighting in Docusaurus. We added these two in scalar-labs/docs-scalardl#657, but I had already merged the related PR in this repository. Therefore, a new PR is needed for adding these two languages to the docusaurus configuration file in this repository.

Note

As mentioned in #849, when testing syntax-highlighting feature, I tried to apply shell-session, which shows as being the common language/syntax supported in Prism and in Docusaurus after the site is built (in node_modules/prismjs/components/prism-shell-session.js), but I didn't see any changes, visually, to the code blocks.

Related issues and/or PRs

• Add syntax highlight for additional coding languages #849

Changes made

• Added the following languages to the Docusaurus configuration file:
  • gradle
  • shell-session

Checklist

The following is a best-effort checklist. If any items in this checklist are not applicable to this PR or are dependent on other, unmerged PRs, please still mark the checkboxes after you have read and understood each item.

• I have updated the side navigation as necessary.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

N/A