Update Changelog section with the relevant links (#54)

## *What has changed?*:

## *Why was it needed?*:

## *How was it done?*:

## Links to trello Tickets or github issues: 

* 

---

### Code Checklist
- [ ] tested
- [x] documented

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "label-printing",
-	"version": "0.3.3",
+	"version": "0.3.4",
 	"description": "Create printable labels with blocks.",
 	"author": "Carsten Bach",
 	"license": "GPL-3.0-or-later",

readme.md

@@ -1,6 +1,6 @@
 # Label Printing
 
-Stable tag: 0.3.3
+Stable tag: 0.3.4
 Tested up to: 6.5.3
 Requires at least: 6.3
 Requires PHP: 8.1
@@ -237,4 +237,8 @@ Depending on your selected **pre-defined label** the `…/label-proxy` block wil
 
 ## Changelog
 
-<!-- changelog -->
+Read the changelog partial for [the latest release](https://github.com/figuren-theater/label-printing/releases/latest).
+
+We *keep a Changelog* in the [`CHANGELOG.md`](https://github.com/figuren-theater/label-printing/blob/main/CHANGELOG.md) file.
+
+