docs: Add JavaScript configuration to the example setup of Deno (#32104)

When using Deno with the example configuration as described here,
duplicate lsp information is displayed in Javascript files.

This pull request solves that issue by adding Javascript to the
configuration.

Release Notes:

- Improve LSP support when using Deno with Javascript using the default
configuration.
3908ca9744dannybunschoten committed on 6/9/2025, 10:18:06 AM· committed by GitHubparent6fe58a2
1 file changedLine totals unavailable