修正一处拼写错误，并且把 TestcasePanel 里面的输入框的大小改为自适应大小

Author: chenyang

src/main/java/com/shuzijun/leetcode/plugin/actions/editor/TestcaseAction.java

@@ -27,7 +27,7 @@ public void actionPerformed(AnActionEvent anActionEvent, Config config, Question
         dialog.setTitle(question.getFormTitle() + " Testcase");
         dialog.setText(question.getTestCase());
         if (dialog.showAndGet()) {
-            String text = dialog.testcaeText();
+            String text = dialog.testcaseText();
             if (StringUtils.isBlank(text)) {
                 MessageUtils.getInstance(anActionEvent.getProject()).showWarnMsg("info", PropertiesUtils.getInfo("test.case"));
                 return;

src/main/java/com/shuzijun/leetcode/plugin/actions/tree/TestcaseAction.java

@@ -29,7 +29,7 @@ public void actionPerformed(AnActionEvent anActionEvent, Config config, JTree tr
         dialog.setTitle(question.getFormTitle() + " Testcase");
         dialog.setText(question.getTestCase());
         if (dialog.showAndGet()) {
-            String text = dialog.testcaeText();
+            String text = dialog.testcaseText();
             if (StringUtils.isBlank(text)) {
                 MessageUtils.getInstance(anActionEvent.getProject()).showWarnMsg("info", PropertiesUtils.getInfo("test.case"));
                 return;

src/main/java/com/shuzijun/leetcode/plugin/window/TestcasePanel.java

@@ -22,11 +22,11 @@ public class TestcasePanel extends DialogWrapper {
     public TestcasePanel(@Nullable Project project) {
         super(project, true);
         jpanel = new JBPanel();
+        jpanel.setLayout(new BorderLayout());
         caseText = new JTextArea();
         caseText.setMinimumSize(new Dimension(400, 200));
         caseText.setPreferredSize(new Dimension(400, 200));
-        jpanel.add(new JBScrollPane(caseText, JBScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JBScrollPane.HORIZONTAL_SCROLLBAR_NEVER));
-
+        jpanel.add(new JBScrollPane(caseText, JBScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JBScrollPane.HORIZONTAL_SCROLLBAR_NEVER), BorderLayout.CENTER);
         setModal(true);
         init();
     }
@@ -45,7 +45,7 @@ protected Action getOKAction() {
         return action;
     }
 
-    public String testcaeText() {
+    public String testcaseText() {
         return caseText.getText();
     }