Fix some wording in docs

docs/reference/device-connector-types.rst

@@ -291,8 +291,7 @@ The ``oem_autoinstall`` device connector supports the following ``provision_data
     * - ``user_data``
       - Required file provided with :ref:`file attachments <file_attachments>`.
         This file will be consumed by the autoinstall and cloud-init.
-        Sample user-data file with is provided below.
-
+        Sample user-data is provided in the section below.
     * - ``redeploy_cfg``
       - Optional file provided with :ref:`file attachments <file_attachments>`.
         This file will override the grub.cfg in reset partition.
@@ -304,9 +303,9 @@ The ``oem_autoinstall`` device connector supports the following ``provision_data
         The keys listed in this file are allowed to access the system in addition
         to keys in ~/.ssh/authorized_keys.
 
-Below is a sample cloud-config file for ``user_data`` key. This config was tested
-to provision Ubuntu OEM 24.04 images. User may keep the basic structure and
-add specific directives to customise the installation.
+Sample cloud-config file for ``user_data`` key. It should contain directives for
+autoinstall and cloud-init. Following is the basic structure example with explanations.
+Optional packages, keys, users, or commands can be added to customise the installation.
 
 For more details, please refer to
 `Autoinstall Reference <https://canonical-subiquity.readthedocs-hosted.com/en/latest/reference/autoinstall-reference.html>`_