docs(website): added truncation markers to longer articles

src/blog/2024-09-03-better-api-documentation/index.mdx

@@ -9,7 +9,11 @@ tags:
   - open-source
 ---
 
-In the ever-evolving world of software development, the importance of clear, concise, and accessible documentation cannot be overstated. The Serenity/JS team is thrilled to announce a series of significant improvements to our API documentation, designed to enhance the developer experience and streamline the process of building automated acceptance tests. These updates are crafted to support developers at every stage of their journey, from understanding the basics to mastering the intricacies of the framework.
+In the ever-evolving world of software development, the importance of clear, concise, and accessible documentation cannot be overstated.
+The Serenity/JS team is thrilled to announce a series of significant improvements to our API documentation, designed to enhance the developer experience and streamline the process of building automated acceptance tests.
+These updates are crafted to support developers at every stage of their journey, from understanding the basics to mastering the intricacies of the framework.
+
+{/* truncate */}
 
 ## A new gateway to learning
 

src/blog/2024-09-26-introducing-numeric/index.mdx

@@ -13,6 +13,8 @@ Love numbers? You'll love Serenity/JS 3.29! 🎉
 
 We’re excited to share the latest release of Serenity/JS, which is packed with new powerful features for handling numeric data in your automated tests!
 
+{/* 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."