[Bug]: JSON Schema emitter drops indentation of fenced code blocks inside of doc comments (/** */)

[Veetaha]

Describe the bug

See reproduction below.

Reproduction

Take this main.tsp TSP file as an example.

/**
 * ```toml
 * deny = [
 *     { name = "simple" },
 *     { name = "simple", version = "*" },
 *     { name = "simple", wrappers = ["example"] }
 * ]
 * ```
 */
@jsonSchema("my-domain.ua")
scalar PackageSpec extends string;

Run tsp compile . with the JSON schema emitter configured.
Then you'll get the following output:

type: string
description: |-
  ```toml
  deny = [
  { name = "simple" },
  { name = "simple", version = "*" },
  { name = "simple", wrappers = ["example"] }
  ]
  ```
$schema: https://json-schema.org/draft/2020-12/schema
$id: my-domain.ua

Notice how indentation inside of the TOML fenced code block got messed up in the description field of the schema.

Workaround

As a workaround it's possible to use the verbose @doc() syntax with """ a multiline string """. It preserves the indentation just fine.

Checklist

• Follow our Code of Conduct
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion.
• The provided reproduction is a minimal reproducible example of the bug.