Default config object code comment mis-match

https://github.com/bigskysoftware/htmx/blob/81a6e25fb9cddc2846f27f494ab816fa32fc64c0/src/htmx.js#L239

Noticed that the default value for `selfRequestsOnly` is defined as `true`, yet the `@default` comment directly above it says that the default value is supposed to be false. I looked back at Git Blame to see if this was a recent change, or simply a mistaken comment that is out of date.

It should probably just say `@default true` in the comment, but didn't see this issue logged anywhere and didn't want to presume.

I'll open a PR and link it to this issue next.