add KronwarsCZ as a contributor for content

[allcontributors]

Adds @KronwarsCZ as a contributor for content.

This was requested by sspencerwire in this comment

[skip ci]

[github-actions]

Test results for fe026aa:

Number of broken URLs: 7

URL,RESULT,FILENAME
 https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.0_release_notes/new-features#enhancement_networking,failed,release_notes/9_0.md
 http://miroir.univ-lorraine.fr/rocky/9.4/AppStream/x86_64/os/repodata/1af312c9-7139-43ed-8761-90ba3cd55461-UPDATEINFO.xml.gz,failed,books/web_services/053-load-balancer-proxies-squid.md
 http://rocky.reloumirrors.net/9.4/extras/x86_64/os/repodata/7d78a729-8e9a-4066-96d4-ab8ed8f06ee8-FILELISTS.xml.gz,failed,books/web_services/053-load-balancer-proxies-squid.md
 http://www.example.org/foo.txt,failed,books/web_services/052-load-balancer-proxies-varnish.md
 http://0.0.0.0:61208/,failed,guides/network/glances_network_monitoring.md
 https://www.qyecst.cn,failed,guides/contribute/README.md
 https://azuremarketplace.microsoft.com/en-us/marketplace/apps/resf.rockylinux-aarch64,failed,guides/cloud/migration-to-new-azure-images.md