Disable line numbers in code blocks for better UX

Comments out hljs.initLineNumbersOnLoad() to remove auto-generated line numbers from code blocks, making code easier to copy/paste and reducing visual clutter.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Signed-off-by: James R. Perkins <jperkins@ibm.com>

Author: jamezp

src/main/resources/web/app/main.js

@@ -5,4 +5,4 @@ import 'highlight.js/styles/agate.css';
 installLineNumbers(hljs, window, document);
 
 hljs.highlightAll();
-hljs.initLineNumbersOnLoad();
+// hljs.initLineNumbersOnLoad(); // Disabled - line numbers removed for cleaner code blocks