Remove chapter legacy installation from working with extensions (#525)

* [TASK] Remove chapter legacy installation from working with extensions

* Update Index.rst

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Co-authored-by: Kiebele <[email protected]>
Co-authored-by: Lina Wolf <[email protected]>
(cherry picked from commit 784e2c8)

Author: 3 people

Documentation/Extensions/Index.rst

@@ -31,7 +31,6 @@ Working With Extensions
 
         This guide contains information on how to create your own extension.
 
-
 ..  toctree::
     :hidden:
     :titlesonly: