docs: list community Java bindings

[lihongjie0209]

Adds a short Community bindings section so JVM users can find the unofficial Java 8 JNI wrapper without going through MCP or a subprocess.

• Repo: https://github.com/lihongjie0209/anydoc-java
• Maven Central: io.github.lihongjie0209:anydoc:0.1.10
• In-process toMarkdown / toDocument

The section is explicitly marked unofficial / not a Firecrawl package.

Related: #74

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Summary by cubic

Adds a Community bindings section to the README and links to it from the intro. It lists the unofficial Java 8+ JNI binding and Maven coordinates so JVM users can call toMarkdown/toDocument in-process without MCP or subprocesses.

Explicitly marks the Java binding as unofficial and not a Firecrawl package. Coordinates: io.github.lihongjie0209:anydoc:0.1.10. Docs-only change.

^{Written for commit 6847b76. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 1 file

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