"reCAPTCHA" in `aria-label` and `title` attributes

[Malvoz]

"reCAPTCHA" in aria-label and title attributes reads "Re-C A P T C H A" using a screen reader.

It'd read a lot better if it was changed to lowercase, e.g. aria-label="recaptcha" and title="recaptcha" respectively, it'd read "recaptcha".