correct indentation after pressing Enter in KDoc tag

#KT-7044 Fixed

idea/src/org/jetbrains/kotlin/idea/formatter/JetBlock.java

@@ -66,7 +66,9 @@ public class JetBlock extends AbstractBlock {
             CLASS_BODY,
             FUNCTION_LITERAL);
 
-    private static final TokenSet KDOC_CONTENT = TokenSet.create(KDocTokens.KDOC, KDocElementTypes.KDOC_SECTION);
+    private static final TokenSet KDOC_CONTENT = TokenSet.create(KDocTokens.KDOC,
+                                                                 KDocElementTypes.KDOC_SECTION,
+                                                                 KDocElementTypes.KDOC_TAG);
 
     // private static final List<IndentWhitespaceRule>
 

idea/testData/editor/commenter/newLineInTag.kt

@@ -0,0 +1,3 @@
+/**
+ * @param foo<caret>
+ */

idea/testData/editor/commenter/newLineInTag_after.kt

@@ -0,0 +1,4 @@
+/**
+ * @param foo
+ * <caret>
+ */

idea/tests/org/jetbrains/kotlin/idea/editor/JetCommenterTest.java

@@ -35,6 +35,10 @@ public class JetCommenterTest  extends LightCodeInsightTestCase {
         doNewLineTypingTest();
     }
 
+    public void testNewLineInTag() throws Exception {
+        doNewLineTypingTest();
+    }
+
     private void doNewLineTypingTest() throws Exception {
         configure();
         EditorTestUtil.performTypingAction(getEditor(), '\n');