Update smallunits.txt

Dry docks don't exist in units.csv, Shipyards does. Nautically they are nearly the same thing.

universe/smallunits.txt

@@ -1 +1 @@
-U200^Drydock U5400^Starfortress U5400^Starfortress U1000^Research U1000^Research U3800^Fighter_Barracks U3800^Fighter_Barracks U3800^Fighter_Barracks U4000^Relay U4000^Relay U4000^Relay U800^Medical U800^Medical U800^Medical U3100^Commerce_Center U3100^Commerce_Center U3100^Commerce_Center U3100^Commerce_Center U1000^Factory U1000^Factory U1000^Factory U1000^Factory U1000^Factory U1000^Factory U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery
+U200^Shipyard U5400^Starfortress U5400^Starfortress U1000^Research U1000^Research U3800^Fighter_Barracks U3800^Fighter_Barracks U3800^Fighter_Barracks U4000^Relay U4000^Relay U4000^Relay U800^Medical U800^Medical U800^Medical U3100^Commerce_Center U3100^Commerce_Center U3100^Commerce_Center U3100^Commerce_Center U1000^Factory U1000^Factory U1000^Factory U1000^Factory U1000^Factory U1000^Factory U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery U1000^MiningBase U800^MiningBase U1200^Refinery