Add `OPTIONS` as method needed for Route

[cancan101]

For consistency with the mount approach, OPTIONS should be included.

[rafalp]

Can you please apply this change for versioned docs too? FastAPI also shares bunch of docs with Starlette.

[cancan101]

Do you mean all these files too:

• https://github.com/mirumee/ariadne-website/blob/master/docs/fastapi-integration.md?plain=1
• https://github.com/mirumee/ariadne-website/blob/95714c90fa1ee319de9bf7c7efcb1be205fcd03c/website/versioned_docs/version-0.18/starlette-integration.md?plain=1
• https://github.com/mirumee/ariadne-website/blob/95714c90fa1ee319de9bf7c7efcb1be205fcd03c/website/versioned_docs/version-0.18/fastapi-integration.md?plain=1

[rafalp]

Yes

[rafalp]

Thank you!