fix empty result in QueryBy example

[wintersolutions]

Unmasking Arya once more. She was hiding behind her unique "arangoId" for some time.

Versions:

com.arangodb:arangodb-spring-data:3.10.0
com.arangodb:arangodb-spring-boot-starter:2.7-0
org.springframework.boot:2.7.13

[cla-bot]

Fresh avocado detected! Welcome and thank you for your contribution @wintersolutions. My avocado-loving overlords have decreed a signed CLA is required for PRs. Please see https://github.com/arangodb/arangodb/blob/devel/CONTRIBUTING.md file to learn more or ask @cw00dw0rd if you have issues.

[cla-bot]

Fresh avocado detected! Welcome and thank you for your contribution @wintersolutions. My avocado-loving overlords have decreed a signed CLA is required for PRs. Please see https://github.com/arangodb/arangodb/blob/devel/CONTRIBUTING.md file to learn more or ask @cw00dw0rd if you have issues.

[cla-bot]

Fresh avocado detected! Welcome and thank you for your contribution @wintersolutions. My avocado-loving overlords have decreed a signed CLA is required for PRs. Please see https://github.com/arangodb/arangodb/blob/devel/CONTRIBUTING.md file to learn more or ask @cw00dw0rd if you have issues.

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: Moritz Winter.
This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email [email protected]
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[cla-bot]

Fresh avocado detected! Welcome and thank you for your contribution @wintersolutions. My avocado-loving overlords have decreed a signed CLA is required for PRs. Please see https://github.com/arangodb/arangodb/blob/devel/CONTRIBUTING.md file to learn more or ask @cw00dw0rd if you have issues.