tel: links marked as problematic

[d7mtg]

For privacy, I changed my phone number and repository name/path.

Full error code is below.

[{
	"resource": "/Users/path/Documents/GitHub/path/contact/index.html",
	"owner": "linkcheckerhtml",
	"severity": 8,
	"message": "Local file '/Users/path/Documents/GitHub/path/contact/tel:2124441100'  does not exist.",
	"startLineNumber": 56,
	"startColumn": 18,
	"endLineNumber": 56,
	"endColumn": 32
}]