Change variable name part 2

Author: Zomis

src/test/groovy/net/zomis/machlearn/images/MinesweeperScan.java

@@ -137,7 +137,7 @@ private ImageNetwork learnFromMinesweeperBoard(MinesweeperTrainingBoard board) {
         ImageAnalysis analysis = new ImageAnalysis(minWH, minWH, false);
         ImageNetworkBuilder builder = analysis.neuralNetwork(40);
 
-        String[] expectedRows = minesweeperTrainingBoard.getExpected().split("\n");
+        String[] expectedRows = board.getExpected().split("\n");
         Set<Character> trainingChars = new HashSet<>();
         for (int y = 0; y < expectedRows.length; y++) {
             String expectedRow = expectedRows[y].trim();