am 3af366dd: am 462cc377: docs: implement sdk announcement in a collapsible box and revise the \'special\' box color and add rounded corners.

Merge commit '3af366ddb2634f97f440b1437bbd21d00101c93b' into eclair-mr2

* commit '3af366ddb2634f97f440b1437bbd21d00101c93b':
  docs: implement sdk announcement in a collapsible box