[blog] set syntax highlighter

docs/_config.yml

@@ -37,6 +37,9 @@ plugins:
 
 show_excerpts: true
 
+kramdown:
+  syntax_highlighter: rouge
+
 exclude:
   - source
   - tutorials

docs/_posts/2024-01-09-hammered.md

@@ -1,7 +1,9 @@
 ---
 layout: post
-title: Hammered Challenge
-excerpt: Use lnav for the cyberdefenders Hammered challenge
+title: Using lnav to solve the CyberDefenders Hammered Challenge
+excerpt: >-
+  A walkthrough that uses lnav's analysis functionality
+  to answer questions about a collection of logs
 ---
 
 I recently stumbled on this nice [review of lnav](https://lopes.id/2023-lnav-test/)