fix: Fix react iterator error for board and lane when not draggable

#88

Author: rcdexta

src/components/BoardContainer.js

@@ -121,7 +121,7 @@ class BoardContainer extends Component {
                 {...passthroughProps}
               />
             )
-            return draggable ? <Draggable key={lane.id}>{laneToRender}</Draggable> : <span>{laneToRender}</span>
+            return draggable ? <Draggable key={lane.id}>{laneToRender}</Draggable> : <span key={lane.id}>{laneToRender}</span>
           })}
         </Container>
       </BoardDiv>

src/components/Lane.js

@@ -178,7 +178,7 @@ class Lane extends Component {
           {...card}
         />
       )
-      return draggable ? <Draggable key={card.id}>{cardToRender}</Draggable> : <span>{cardToRender}</span>
+      return draggable ? <Draggable key={card.id}>{cardToRender}</Draggable> : <span key={card.id}>{cardToRender}</span>
     })
 
     return (