More cross references in doc

lib/index.js

@@ -160,7 +160,7 @@ function MarkdownIt(presetName, options) {
   /**
    * MarkdownIt#inline -> ParserInline
    *
-   * Instance of inline parser. You may need it to add new rules when
+   * Instance of [[ParserInline]]. You may need it to add new rules when
    * writing plugins. For simple rules control use [[MarkdownIt.disable]] and
    * [[MarkdownIt.enable]].
    **/
@@ -169,16 +169,16 @@ function MarkdownIt(presetName, options) {
   /**
    * MarkdownIt#block -> ParserBlock
    *
-   * Instance of block parser. You may need it to add new rules when
+   * Instance of [[ParserBlock]]. You may need it to add new rules when
    * writing plugins. For simple rules control use [[MarkdownIt.disable]] and
    * [[MarkdownIt.enable]].
    **/
   this.block = new ParserBlock();
 
   /**
-   * MarkdownIt#core -> ParserCore
+   * MarkdownIt#core -> Core
    *
-   * Instance of core chain executor. You may need it to add new rules when
+   * Instance of [[Core]] chain executor. You may need it to add new rules when
    * writing plugins. For simple rules control use [[MarkdownIt.disable]] and
    * [[MarkdownIt.enable]].
    **/
@@ -187,7 +187,7 @@ function MarkdownIt(presetName, options) {
   /**
    * MarkdownIt#renderer -> Renderer
    *
-   * Instance of Renderer. Use it to modify output look. Or to add rendering
+   * Instance of [[Renderer]]. Use it to modify output look. Or to add rendering
    * rules for new token types, generated by plugins.
    *
    * ##### Example