fix: Fixed example in README.md

[ArtemLavrentii]

Most likely the intent of this lambda was to return an object, and not to have a code-block with labels.

Description

Checklist

• the pull request title describes what this PR does (not a vague title like Update index.md)
• the pull request targets the default branch of the repository (develop)
• the code follows the established code style of the repository
  • npm run prettier:check passes
  • npm run lint:check passes
• tests are added for the changes I made (if any source code was modified)
• documentation added or updated
• I have run the project locally and verified that there are no errors

Fixes

fixes #742

[ArtemLavrentii]

I'm not 100% that even this is a correct example. Shouldn't upload option just be an object ?

Or maybe it should be called here instead ?

saveFile(@UploadedFile("fileName", { options: fileUploadOptions }) file: any) {

[github-actions]

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