Increase clay pot maximum contains weight

[Saicchi]

Is your feature request related to a problem? Please describe.

A clay jug holds 8 units of water but only 7 units of salt water. Though water and salt water have the same volume per unit, salt water is 10 grams heavier.

Cataclysm-DDA/data/json/items/tool/cooking.json

Lines 196 to 200 in 5eb505a

	"id": "clay_pot",
	"type": "GENERIC",
	"category": "tools",
	"name": { "str": "clay pot" },
	"description": "A crude clay pot with lid used for cooking.",

Cataclysm-DDA/data/json/items/tool/cooking.json

Line 209 in 5eb505a

"pocket_data": [ { "max_contains_volume": "2 L", "max_contains_weight": "2 kg", "watertight": true, "rigid": true } ],

Describe the solution you'd like

Clay pot to hold 8 units of salt water, that is increase its max_contains_weight.

Since its large counterpart can hold 37.5L of water or 50 kg. I suggest increasing it the clay_pot max_contains_weight to 2750 g.

Describe alternatives you've considered

Using another value.

Additional context

large clay pot ratio = 50 kg / 37.5 L = 1.33 kg/L. Multiply it by clay pot max_contains_weight and round it up to a multiple of 250 g and that is where I got the number from.