generate correct HTML for code blocks

idea/src/org/jetbrains/kotlin/idea/kdoc/KDocRenderer.kt

@@ -160,7 +160,7 @@ object KDocRenderer {
                     sb.trimEnd()
                     sb.append("<pre><code>")
                     processChildren()
-                    sb.append("</code><pre>")
+                    sb.append("</code></pre>")
                 }
                 MarkdownElementTypes.SHORT_REFERENCE_LINK,
                 MarkdownElementTypes.FULL_REFERENCE_LINK -> {

idea/testData/editor/quickDoc/OnMethodUsageWithCodeBlock.kt

@@ -7,6 +7,11 @@
  *
  * Third line
  * ```
+ *
+ * Text between code blocks.
+ * ```
+ * ```
+ * Text after code block.
  */
 fun testMethod() {
 
@@ -25,4 +30,6 @@ fun test() {
 //INFO:     Second line
 //INFO:
 //INFO: Third line
-//INFO: </code><pre>
+//INFO: </code></pre><p>Text between code blocks.</p>
+//INFO: <pre><code>
+//INFO: </code></pre><p>Text after code block.</p>