docs(website): updated the structure of the news section

Author: jan-molak

docusaurus.config.ts

@@ -109,6 +109,8 @@ const config: Config = {
                     editUrl,
                     path: './src/blog',
                     showReadingTime: true,
+                    blogSidebarTitle: 'Serenity/JS News',
+                    blogSidebarCount: 'ALL',
                 },
                 pages: {
                     ...remarkOptions,

src/blog/2024-11-22-simplifying-test-automation-infrastructure/index.mdx

@@ -17,6 +17,8 @@ This update introduces:
 
 Let’s explore what’s new!
 
+{/* truncate */}
+
 :::tip New to Serenity/JS?
 New to Serenity/JS or test automation? Start with ["Your first web scenario"](/handbook/web-testing/your-first-web-scenario/),
 praised by our community as "the best guide to take your automation skills to the next level."