Added tests to prove, that KT-8547 fixed

idea/idea-completion/testData/kdoc/FQLinkInTag1.kt

@@ -0,0 +1,10 @@
+package importP.source
+
+/**
+ * @see importP.<caret>
+ */
+class Referrer
+
+// EXIST: source
+// ABSENT: Referrer
+

idea/idea-completion/testData/kdoc/FQLinkInTag2.kt

@@ -0,0 +1,9 @@
+package importP.source
+
+/**
+ * @see importP.source.<caret>
+ */
+class Referrer
+
+// EXIST: Referrer
+

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/KDocCompletionTestGenerated.java

@@ -54,6 +54,18 @@ public class KDocCompletionTestGenerated extends AbstractJvmBasicCompletionTest
         doTest(fileName);
     }
 
+    @TestMetadata("FQLinkInTag1.kt")
+    public void testFQLinkInTag1() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/kdoc/FQLinkInTag1.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("FQLinkInTag2.kt")
+    public void testFQLinkInTag2() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/kdoc/FQLinkInTag2.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("Link.kt")
     public void testLink() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/kdoc/Link.kt");