rewording

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:
@@ -33,7 +33,7 @@ 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).
+via TER or Composer (via Packagist).
 
 Go explore!
 
@@ -42,7 +42,7 @@ 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