[doc/bug] darklogo should be darkLogo

[tcarreira]

Sections education and experiences allow for logo and darkLogo, but the comment says darklogo instead of darkLogo, which doesn't work.

The values are read from as darkLogo:

• https://github.com/hugo-toha/toha/blob/6350e5e2e2fe0e4a5ca8e8f21fc7059f4049668d/layouts/partials/sections/education.html#L36
• https://github.com/hugo-toha/toha/blob/6350e5e2e2fe0e4a5ca8e8f21fc7059f4049668d/layouts/partials/sections/education-alt.html#L36
• https://github.com/hugo-toha/toha/blob/6350e5e2e2fe0e4a5ca8e8f21fc7059f4049668d/layouts/partials/sections/experiences/positions.html#L4