[TASK] Overhaul extension development howto backend modules (#6232)

Releases: main, 13.4

Author: sarahmccarthy123

Documentation/ExtensionArchitecture/HowTo/BackendModule/Index.rst

@@ -6,7 +6,7 @@
 Backend modules
 ===============
 
-TYPO3 CMS offers a number of ways to attach custom functionality to the
+TYPO3 CMS has a number of ways of adding custom functionality to the
 backend. They are described in this chapter.
 
 ..  card-grid::
@@ -22,23 +22,23 @@ backend. They are described in this chapter.
 
     ..  card:: :ref:`Backend module configuration examples <backend-modules-configuration-examples>`
 
-        Howto register custom modules provided by extensions.
+        How to register modules provided by extensions.
 
     ..  card:: :ref:`Create a module with Extbase <backend-modules-extbase>`
 
-        Explains how to create a module with Extbase and Fluid. This is
-        the preferred method if extensive data modeling is involved.
+        How to create a module using Extbase and Fluid - the best option if you
+        need to do lots of data modelling.
 
     ..  card:: :ref:`Create a module with Core functionality <backend-modules-template-without-extbase>`
 
-        Explains how to create a module without Extbase. Fluid can still be
-        used, however there are some limitations. This is the preferred way
-        if no extensive data modelling is needed.
+        How to create a module without Extbase (you can still use Fluid
+        but with some limitations). The best option if you don't need to do any
+        data modelling.
 
     ..  card:: :ref:`Security Considerations <backend-modules-security>`
 
-        Explores web application security considerations when
-        developing custom modules for the backend user interface.
+        Explores web application security considerations around
+        developing modules for the backend user interface.
 
     ..  card:: :ref:`Tutorials <backend-modules-tutorials>`