With the new changes to the wiki some time ago, this is now changed to a mode that every <li>-item has the same bottom margin. This is also not very readable.
It's a consistency problem too with <ul>-elements inside <li>-items; the <ul> is appended directly to the next row of the parenting <li> which suggests the first <li>-item is more closely tied to the parenting <li>-item than the rest (since the <li> items have, again, the bottom margin).
I'd suggest using a bigger line-height for the <li>-items and removing the bottom margin from the <li>-items if pursuing better readability.
With the new changes to the wiki some time ago, this is now changed to a mode that every <li>-item has the same bottom margin. This is also not very readable.
It's a consistency problem too with <ul>-elements inside <li>-items; the <ul> is appended directly to the next row of the parenting <li> which suggests the first <li>-item is more closely tied to the parenting <li>-item than the rest (since the <li> items have, again, the bottom margin).
I'd suggest using a bigger line-height for the <li>-items and removing the bottom margin from the <li>-items if pursuing better readability.