Revert "Update index.md"

This reverts commit cbfee5b7c4be33437f9c09994a2ac927326ea54e.
Revert "Revert "Update index.md""

This reverts commit 7ce1ec25bcdec001fab612ab7300eb2293dca004.
Revert "Revert "Revert "Update index.md"""

This reverts commit 91490f1866b3f343d54aff4cb999be9dc7669c14.