docs(readme): change '6 is coming' warning to '6 is out'

Author: olets

README.md

@@ -3,7 +3,7 @@
 **zsh-abbr** is the zsh manager for **auto-expanding abbreviations** - text that when written in a terminal is replaced with other (typically longer) text. Inspired by fish shell.
 
 > [!IMPORTANT]  
-> v6 is coming, with breaking changes. If you do advanced configuration, read [the v5.x -> v6.x migration guide](https://v6.zsh-abbr.olets.dev/migrating-between-versions.html#upgrading-from-v5-to-v6) and/or read about [pinning v5.x](https://v5.zsh-abbr.olets.dev/installation.html).
+> v6 was released on Nov 12 2024, with breaking changes. If you do advanced configuration, read [the v5.x -> v6.x migration guide](https://v6.zsh-abbr.olets.dev/migrating-between-versions.html#upgrading-from-v5-to-v6) and/or read about [pinning v5.x](https://v5.zsh-abbr.olets.dev/installation.html).
 
 For example, abbreviate `git checkout` as `co` (or even `c` or anything else). Type `co`<kbd>Space</kbd> and the `co` **turns into** `git checkout`. Abbreviate `git checkout main` as `cm`. Type `cm`<kbd>Enter</kbd> and the `cm` **turns into and runs** `git checkout main`. Don't want an abbreviation to expand? Use <kbd>Ctrl</kbd><kbd>Space</kbd> instead of <kbd>Space</kbd>, and `;`<kbd>Enter</kbd> instead of <kbd>Enter</kbd>.