rewording again (#383)

* redo former commit

* Extension Manager

Author: franzholz

Documentation/Setup/UseStyleguide.rst

@@ -13,7 +13,7 @@ It is recommended to use the `styleguide` extension to auto generate several
 example pages which can be used for testing the frontend and backend of TYPO3.
 
 The :t3src:`styleguide` extension is part of the TYPO3 Core repository.
-It used to mostly to showcase TCA / FormEngine features but has since evolved
+It is mostly used to showcase TCA / FormEngine features, but it has since evolved
 to provide additional features.
 
 The styleguide extension can create pages within the TYPO3 site, specifically:
@@ -32,8 +32,7 @@ allows to test many TCA related configurations easily, without the need to
 create custom extensions to reproduce problems.
 
 `EXT:styleguide` has been integrated to the TYPO3 Core monorepository with
-version 13. On older TYPO3 versions you need to install the package for example
-via TER or Packagist (using Composer).
+version 13. On former TYPO3 versions you need to install this package either in the Extension Manager or by Composer.
 
 Go explore!
 
@@ -42,7 +41,7 @@ Setup
 
 ..  rst-class:: bignums-xxl
 
-1.  Activate the styleguide extension in the extension manager
+1.  Activate the styleguide extension in the Extension Manager
     ..  tip::
 
         Once the styleguide extension is activated, it is possible to create
@@ -59,11 +58,11 @@ Setup
             # show help
             bin/typo3 styleguide:generate -h
 
-2.  In the Modules bar, Click on Sytem > Styleguide
-3.  Click on the :guilabel:`Styleguide` menu item (older TYPO3 versions
+2.  In the Modules bar click on :guilabel:`System > Styleguide`
+3.  Click on the :guilabel:`Styleguide` menu item (former TYPO3 versions
     present a custom module menu item)
 
-    The Styleguide overview appears.
+    The :guilabel:`Styleguide` overview appears.
 
 4.  Click on :guilabel:`TCA / Records / Frontend`
 5.  Create pages