fix customization link (#818)
fix customization link (#818)

Repro:
 - Open https://goreleaser.com/ in Chrome or Firefox
 - Click on "customize" in the second paragraph
Expected:
 - The page jumps to "Customization"
Actual:
 - No change because no matchin `name` or `id` is found
goreleaser/goreleaser,goreleaser/goreleaser,goreleaser/releaser,goreleaser/goreleaser