render markdown inside link texts

#KT-11791 Fixed

idea/testData/editor/quickDoc/OnMethodUsageWithMarkdown.kt

@@ -2,10 +2,11 @@
  * Some documentation. **Bold** *underline* `code` foo: bar (baz) [quux] <xyzzy> 'apos'
  *
  * [Kotlin](http://www.kotlinlang.org)
+ * [a**b**__d__ kas ](http://www.ibm.com)
  *
  * [C]
  *
- * [See this class][C]
+ * [See **this** class][C]
  */
 fun testMethod() {
 
@@ -19,6 +20,6 @@ fun test() {
 }
 
 //INFO: <b>public</b> <b>fun</b> testMethod(): Unit <i>defined in</i> root package<p>Some documentation. <strong>Bold</strong> <em>underline</em> <code>code</code> foo: bar (baz) <a href="psi_element://quux">quux</a>  'apos'</p>
-//INFO: <p><a href="http://www.kotlinlang.org">Kotlin</a></p>
+//INFO: <p><a href="http://www.kotlinlang.org">Kotlin</a> <a href="http://www.ibm.com">a<strong>b</strong><strong>d</strong>kas</a></p>
 //INFO: <p><a href="psi_element://C">C</a></p>
-//INFO: <p><a href="psi_element://C">See this class</a></p>
+//INFO: <p><a href="psi_element://C">See<strong>this</strong>class</a></p>