Replace `recursiveness` by `recursion`

    /**
     * This test runs all rules against an API specification with recursive references. It prevents check developers
     * from StackOverflow exceptions during the check execution.
     *
     * General advice: Don't use `hashCode` or `toString` methods on the OpenAPI elements since they don't support
     * recursiveness. Keep in mind that these methods can be called implicitly (e.g. when putting objects in a Set).
     */
    @Test
    fun `all rules must be able to cope with recursive api specifications`() {

recursiveness is not a word. The word you are looking for it recursivity recursion.

Perform a project wide search to make sure that mistake is not anywhere else.

[roxspring]

Out of curiosity I just looked up the 3 words on google trends and was a little surprised to see that recursivity is slightly more common than recursiveness. However, both disappear in the bottom of the chart when compared to recursion.

[roxspring]

Can be closed now.