refactor: Rearrange introductory text in admin manual (final I think!)

Signed-off-by: Josh <josh.t.richards@gmail.com>

Author: joshtrichards

admin_manual/index.rst

@@ -4,9 +4,9 @@ Introduction
 
 **Welcome to the Nextcloud Server Administration Guide.**
 
-This guide explains how to perform administrative tasks in Nextcloud, a highly versatile and scalable open-source platform for file synchronization and content collaboration. With over 400,000 deployments, Nextcloud can run on a simple two-user Raspberry Pi or scale to support global, distributed installations serving tens of millions of users. 
+This guide explains how to perform administrative tasks in Nextcloud, a highly versatile and scalable open-source platform for file synchronization and content collaboration. 
 
-It can be deployed on-premises, in private or public clouds, or in hybrid environments. Supported by a large and growing community, Nextcloud is available in more than 60 languages.
+With over 400,000 deployments, Nextcloud can run on a simple two-user Raspberry Pi or scale to support global, distributed installations serving tens of millions of users. It can be deployed on-premises, in private or public clouds, or in hybrid environments. Supported by a large and growing community, Nextcloud is available in more than 60 languages.
 
 The latest editions of the Nextcloud manuals are always available online at
 `docs.nextcloud.com <https://docs.nextcloud.com/>`_.