ParseTolerant "1.15-alpine3.14" returns error

[bhaskarkc]

Using semver v4

	e, err := semver.ParseTolerant("1.15-alpine3.14")
	if err != nil {
		fmt.Println(err)
	}

returns error Invalid character(s) found in minor number "15-alpine3"

[denislyam-buildben2]

Part of the line -alpine3 is interpreted by the package as a pre-release version.
But according to the document, the pre-release version can go strictly beyond the patch part