Fix git information lookup folder, fixes incremental compilation.

[Mpdreamz]

No description provided.

[Copilot]

Pull Request Overview

This PR adjusts the git lookup folder for incremental compilation and updates the JSON mapping for the RepositoryName property in the git checkout information.

• Replaces DocumentationSourceDirectory with rootFolder for determining the git source folder.
• Removes lazy-loaded RepositoryName in favor of a direct JSON-mapped property.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/Elastic.Markdown/BuildContext.cs	Updates the source folder passed to git lookup to use rootFolder, supporting the incremental compilation fix.
src/Elastic.Markdown/IO/Discovery/GitCheckoutInformation.cs	Replaces the lazy initialization for RepositoryName with a JSON property mapping ("name").

Comments suppressed due to low confidence (2)

src/Elastic.Markdown/BuildContext.cs:79

• Verify that 'rootFolder' is correctly initialized and represents the intended directory for git lookup. If 'rootFolder' is not properly defined in this context it could lead to unexpected behavior.

Git = GitCheckoutInformation.Create(rootFolder, ReadFileSystem);

src/Elastic.Markdown/IO/Discovery/GitCheckoutInformation.cs:31

• Ensure that changing the JSON property name for RepositoryName to 'name' is compatible with all consuming components, as this alters the serialized contract.

[JsonPropertyName("name")]
	public string? RepositoryName { get; init; }