message: Allow dark images for docs footer
diff: import { Cell, Grid, HFlow, Link, Theme, useStyles } from '../../lib'
  +import { Image } from './mdx'
  import { PageContainer } from './PageContainer'
  export function AppFooter() {
  @@ -12,10 +13,10 @@ export function AppFooter() {
  <Cell xs={6}>
  <HFlow>
  <Link href='https://ufsc.br/' target='_blank' style={{ display: 'inline-block' }}>
  - <img src='/static/image/logo-ufsc.svg' />
  + <Image src='/static/image/logo-ufsc.svg' />
  </Link>
  <Link href='https://bridge.ufsc.br/' target='_blank' style={{ display: 'inline-block' }}>
  - <img src='/static/image/logo-bridge.svg' />
  + <Image src='/static/image/logo-bridge.svg' />
  </Link>
  </HFlow>
  </Cell>
  @@ -26,17 +27,17 @@ export function AppFooter() {
  target='_blank'
  style={{ display: 'inline-block' }}
  >
  - <img src='/static/image/icn-linkedin.svg' />
  + <Image src='/static/image/icn-linkedin.svg' />
  </Link>
  <Link
  href='https://www.facebook.com/laboratoriobridge/'
  target='_blank'
  style={{ display: 'inline-block' }}
  >
  - <img src='/static/image/icn-facebook.svg' />
  + <Image src='/static/image/icn-facebook.svg' />
  </Link>
  <Link href='https://github.com/laboratoriobridge' target='_blank' style={{ display: 'inline-block' }}>
  - <img src='/static/image/icn-github.svg' />
  + <Image src='/static/image/icn-github.svg' />
  </Link>
  </HFlow>
  </Cell>
  