docs(text-align): modify the TextAlign 'defaultAlignment' option's default (#6061)

Author: arnaugomez

.changeset/yellow-hairs-search.md

@@ -0,0 +1,5 @@
+---
+"@tiptap/extension-text-align": patch
+---
+
+Modify the documentation of the default value of defaultAlignment so that it matches the code

packages/extension-text-align/src/text-align.ts

@@ -17,7 +17,7 @@ export interface TextAlignOptions {
 
   /**
    * The default alignment.
-   * @default 'left'
+   * @default null
    * @example 'center'
    */
   defaultAlignment: string | null,