docs: clarify "how releases work today" heading with pre-October-2026 timeframe

https://claude.ai/code/session_01Vecdu4nTcdKdqYBTTKJcdy

Author: claude

src/content/blog/nodejs-release-schedule-changes/index.md

@@ -38,7 +38,7 @@ If you only have a minute, here is the whole thing in six bullets:
 
 The rest of this article unpacks each of these and adds the dates, the reasoning, and the practical advice.
 
-## How Node.js releases work today
+## How Node.js releases work today (pre October 2026)
 
 Before we get into what is changing, it is worth a quick refresher on how things have worked up to now, because the contrast is what makes the new model click.