Update readme

README.rst

@@ -51,8 +51,8 @@ default TipTap frontend), and set the editor you want to use:
 
 .. code-block:: python
 
-    INSTALLED_APPS = [..., "djangocms_text.contrib.text_ckeditor5", ...]
-    DJANGOCMS_TEXT_EDITOR = "djangocms_text.contrib.text_ckeditor5.ckeditor5"
+    INSTALLED_APPS = [..., "djangocms_text.contrib.text_ckeditor4", ...]
+    DJANGOCMS_TEXT_EDITOR = "djangocms_text.contrib.text_ckeditor4.ckeditor4"
 
 
 Upgrading from djangocms-text-ckeditor
@@ -145,6 +145,9 @@ Example::
     DJANGOCMS_TEXT_EDITOR = "djangocms_text.contrib.text_ckeditor5.ckeditor4"
 
 
+Other rich text editors may be available, e.g. CKEditor 5 in ``extension_text_ckeditor5``.
+
+
 Inline editing feature
 ~~~~~~~~~~~~~~~~~~~~~~