Add missing keys to list components.

client/src/components/tgos/Tgo.tsx

@@ -2,6 +2,7 @@ import { Icon, Point } from "leaflet";
 import { Marker, Tooltip } from "react-leaflet";
 
 import { Symbol as MilSymbol } from "milsymbol";
+import SplitLines from "../splitlines/SplitLines";
 import { Tgo as TgoModel } from "../../api/tgo";
 
 function iconForTgo(cp: TgoModel) {
@@ -25,12 +26,7 @@ export default function Tgo(props: TgoProps) {
       <Tooltip>
         {`${props.tgo.name} (${props.tgo.control_point_name})`}
         <br />
-        {props.tgo.units.map((unit) => (
-          <>
-            {unit}
-            <br />
-          </>
-        ))}
+        <SplitLines items={props.tgo.units} />
       </Tooltip>
     </Marker>
   );