Fix incorrect description for FixAmmoSell

Previous description understated the effects of the `allowNegativeDosh`
flag. Effects are much more common and significat that previously
thought because of game behavior on filling ammo for one or all weapons.

config/Acedia.ini

@@ -51,16 +51,21 @@ allowSellValueIncrease=true
 autoEnable=true
 ;     Due to how this fix works, players with level below 6 get charged less
 ; than necessary by the shop and this fix must take the rest of
-; the cost by itself. While it's _highly_ unreliable and can only provide
-; a minuscule benefit this can potentially be abused by cheaters.
-;     To decrease the amount of value they can get from it, this fix can be
-; allowed to decrease players' money into negative values.
-; The trade off is a small chance that there is a bug in this fix and
-; an unlucky circumstances can lead to regular players
-; to have negative dosh values.  
-;     Both situations are highly unlikely and whichever one you chose probably
-; doesn't matter, but the option is there.
-allowNegativeDosh=true
+; the cost by itself.
+;     The problem is, due to how ammo purchase is coded, low-level (<6 lvl)
+; players can actually buy more ammo for "fixed" weapons than they can afford
+; by filling ammo for one or all weapons.
+;     Setting this flag to 'true' will allow us to still take full cost
+; from them, putting them in "debt" (having negative dosh amount).
+; If you don't want to have players with negative dosh values on your server
+; as a side-effect of this fix, then leave this flag as 'false',
+; letting low level players buy ammo cheaper
+; (but not cheaper than lvl6 could).
+;     NOTE: this issue doesn't affect level 6 players.
+;     NOTE #2: this fix does give players below level 6 some
+; technical advantage compared to vanilla game, but this advantage
+; cannot exceed benefits of having level 6.
+allowNegativeDosh=false
 
 
 [Acedia.FixInventoryAbuse]