[java] fixes javadoc inspection false positive for split @see tags (IDEA-158662)

java/java-analysis-impl/src/com/intellij/codeInspection/javaDoc/JavadocHighlightUtil.java

@@ -204,7 +204,7 @@ public class JavadocHighlightUtil {
   private static boolean isValidSeeRef(PsiElement e) {
     if (SEE_TAG_REFS.contains(e.getNode().getElementType())) return true;
 
-    String text = e.getText();
+    String text = e.getText().trim();
     if (StringUtil.isQuotedString(text) && text.charAt(0) == '"') return true;
 
     if (text.toLowerCase(Locale.US).startsWith("<a href=")) return true;

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/javaDoc/See6.java

@@ -0,0 +1,8 @@
+class Test {
+  /**
+   * @see
+   * <a href="http://docs.oracle.com/javase/8/docs/technotes/tools/unix/javadoc.html#CHDCDBGG">
+   * Oracle Docs</a>
+   */
+  void m() { }
+}

java/java-tests/testSrc/com/intellij/codeInsight/daemon/JavadocHighlightingTest.java

@@ -65,6 +65,7 @@ public class JavadocHighlightingTest extends LightDaemonAnalyzerTestCase {
   public void testSee3() { doTest(); }
   public void testSee4() { doTest(); }
   public void testSee5() { doTest(); }
+  public void testSee6() { doTest(); }
   public void testLinkToItself() { doTest(); }
   public void testSeeConstants() { doTest(); }
   public void testSeeNonRefs() { doTest(); }