Update water_mill.lua

reverting changes that shouldn't be there. Because, this is a manual update PR :) Refer to minetest-mods#412 (comment) and minetest-mods#412 (comment)

technic/machines/LV/water_mill.lua

@@ -1,6 +1,6 @@
 -- A water mill produces LV EUs by exploiting flowing water across it
---- It is a LV EU supplyer and fairly low yield (max 120EUs)
---- It is a little under half as good as the thermal generator.
+-- It is a LV EU supplyer and fairly low yield (max 120EUs)
+-- It is a little under half as good as the thermal generator.
 
 local S = technic.getter
 
@@ -33,7 +33,7 @@ local run = function(pos, node)
 	local production_level = 0
 	local eu_supply        = 0
 	local max_output       = 35 * 45 -- four param2's at 15 makes 60, cap it lower for "overload protection"
--									 -- (plus we want the gen to report 100% if three sides have full flow)
+									 -- (plus we want the gen to report 100% if three sides have full flow)
 
 	local positions = {
 		{x=pos.x+1, y=pos.y, z=pos.z},