Extend Javadoc

commonmark-ext-gfm-tables/src/main/java/org/commonmark/ext/gfm/tables/TableCell.java

@@ -34,7 +34,7 @@ public void setAlignment(Alignment alignment) {
     }
 
     /**
-     * @return the cell width
+     * @return the cell width (the number of dash and colon characters in the delimiter row of the table for this column)
      */
     public int getWidth() {
         return width;