Add Logitech logo (726 bytes) (#596) (#597)

* Add Logitech logo (726 bytes) (#596)

* Added doc references on Logitech

* Reformat Logitech svg

* Update Logitech logo

* Update logitech logo (375 Bytes)

* Update Logitech logo (657 Bytes)

* Update logitech.svg

* Update README.md

Co-authored-by: Terence Eden <edent@users.noreply.github.com>

images/reference/index.md

@@ -278,4 +278,5 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/outlook.svg" width="256" /> | <img src="/images/reference/outlook.jpg" width="256" /> | https://ow2.res.office365.com/owalanding/2021.8.25.01/images/outlook-icon.jpg
 | <img src="/images/svg/subscribestar.svg" width="256" /> | <img src="/images/reference/subscribestar.png" width="256" /> | https://www.subscribestar.com/brand
 | <img src="/images/svg/visualstudiocode.svg" width="256" /> | <img src="/images/reference/visualstudiocode.svg" width="256" /> | https://code.visualstudio.com/brand
+| <img src="/images/svg/logitech.svg" width="256" /> | <img src="/images/reference/logitech.png" width="256" /> | https://www.logitech.com/en-au
 | <img src="/images/svg/netflix.svg" width="256" /> | <img src="/images/reference/netflix.png" width="256" /> | https://brand.netflix.com/en/assets/brand-symbol/