Beheer: voeg linter regel toe voor invalid-input (#328) #619

Job	Run time
Linter test cases	33s
Build / Snapshot (index.html)	44s
Examples linter tests (express)	41s
Examples linter tests (python)	35s
Examples linter tests (golang)	59s
Examples linter tests (aspnet)	54s
Examples linter tests (quarkus)	1m 23s
Check / Markdownlint	13s
Check / Links	18s
Check / WCAG	28s
Publish (Logius) / Upload develop artifacts	9s
Publish (Logius) / Release	0s
Publish (Logius) / Preview	0s
Publish (Logius) / Publiceer consultatie	0s
Publish (Logius) / Deploy develop	11s
	7m 8s

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