Update type declaration for MarkdownItToken with custom line/lineNumber properties.

lib/markdownlint.d.ts

@@ -174,6 +174,14 @@ type MarkdownItToken = {
      * Token type.
      */
     type: string;
+    /**
+     * Line number (1-based).
+     */
+    lineNumber: number;
+    /**
+     * Line content.
+     */
+    line: string;
 };
 /**
  * Error-reporting callback.

lib/markdownlint.js

@@ -783,6 +783,8 @@ module.exports = markdownlint;
  * @property {number} nesting Level change.
  * @property {string} tag HTML tag name.
  * @property {string} type Token type.
+ * @property {number} lineNumber Line number (1-based).
+ * @property {string} line Line content.
  */
 
 /**