[update] index page and some links

Author: mafanya23

docs/grid/api/grid_summary_config.md

@@ -82,7 +82,7 @@ console.log(summary); // { totalPopulation: 1000000, totalArea: 50000, density:
 
 @descr:
 
-**Related article:** [Summary of calculated values](grid/configuration.md#summary-of-calculated-values)
+**Related article:** [Summary of calculated values](grid/configuration.md#custom-statistics-in-the-column-headerfooter-and-spans)
 
 **Related**: [getSummary](grid/api/grid_getsummary_method.md)
 

docs/index.md

@@ -1,11 +1,11 @@
 ---
-sidebar_label: Suite 8 overview
-title: DHTMLX Suite 8 JavaScript UI Widgets Overview 
+sidebar_label: Suite 9 overview
+title: DHTMLX Suite 9 JavaScript UI Widgets Overview 
 slug: /
-description: You can have an overview of Suite 8 and its widgets in the documentation of the DHTMLX JavaScript UI library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Suite 8.
+description: You can have an overview of Suite 9 and its widgets in the documentation of the DHTMLX JavaScript UI library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Suite 9.
 ---
 
-# DHTMLX Suite 8 UI widgets overview
+# DHTMLX Suite 9 UI widgets overview
 
 import WidgetIcons from '../src/components/WidgetIcons';
 

docs/migration.md

@@ -99,7 +99,7 @@ const grid = new dhx.Grid("grid_container", {
 });
 ~~~
 
-- the `summary` config options are added into Grid and column configuration for calculating values based on columns data while [creating a summary list](grid/configuration.md#summary-of-calculated-values) both at the Grid and column's levels
+- the `summary` config options are added into Grid and column configuration for calculating values based on columns data while [creating a summary list](grid/configuration.md#custom-statistics-in-the-column-headerfooter-and-spans) both at the Grid and column's levels
 
 - the [`getSummary()`](grid/api/grid_getsummary_method.md) method is added for getting the summary data either of a column or of the Grid