message: tweaks: update 'documentation' :D
diff: @@ -11,3 +11,4 @@ Tweaks stuff. See below.
  * `NWNX_TWEAKS_DISABLE_PAUSE`: true or false
  * `NWNX_TWEAKS_COMPARE_VARIABLES_WHEN_MERGING`: true or false
  * `NWNX_TWEAKS_PARRY_ALL_ATTACKS`: true or false
  +* `NWNX_TWEAKS_SNEAK_ATTACK_IGNORE_CRIT_IMMUNITY`: true or false
  