update changelog

Author: ChiragAgg5k

CHANGELOG.md

@@ -5,6 +5,7 @@
 * Add array-based enum parameters (e.g., `permissions: BrowserPermission[]`).
 * Breaking change: `Output` enum has been removed; use `ImageFormat` instead.
 * Add `getQueueAudits` support to `Health` service.
+* Add longtext/mediumtext/text/varchar attribute and column helpers to `Databases` and `TablesDB` services.
 
 ## 21.1.0
 
@@ -102,4 +103,4 @@
     * Rename `templateBranch` to `templateVersion`  in `createFunction()`.
     * Rename `downloadDeployment()` to `getDeploymentDownload()`
 
-> You can find the new syntax for breaking changes in the [Appwrite API references](https://appwrite.io/docs/references). Select version `1.6.x`.
+> You can find the new syntax for breaking changes in the [Appwrite API references](https://appwrite.io/docs/references). Select version `1.6.x`.