update uoc logo reference, remove excess references
@@ -216,13 +216,7 @@ Past contributors
.. |rah| image:: https://github.com/pymedphys/pymedphys/raw/3f8d82fc3b53eb636a75336477734e39fa406110/docs/logos/gosa_200x200.png
:target: `Royal Adelaide Hospital`_
-.. |jarmc| image:: https://github.com/pymedphys/pymedphys/raw/3f8d82fc3b53eb636a75336477734e39fa406110/docs/logos/jarmc_200x200.png
- :target: `Anderson Regional Cancer Center`_
-
-.. |nbcc| image:: https://github.com/pymedphys/pymedphys/raw/3f8d82fc3b53eb636a75336477734e39fa406110/docs/logos/nbcc_200x200.png
- :target: `Northern Beaches Cancer Care`_
-
-.. |uoc| image:: https://github.com/pymedphys/pymedphys/raw/3f8d82fc3b53eb636a75336477734e39fa406110/docs/logos/uoc_200x200.png
+.. |uoc| image:: https://github.com/pymedphys/pymedphys/raw/363b544281aab282a56b297dc8fdd521233c6a63/logos/uoc_200x200.png
:target: `University of Calgary`_
.. |uth| image:: https://github.com/pymedphys/pymedphys/raw/3f8d82fc3b53eb636a75336477734e39fa406110/docs/logos/UTHSA_logo.png
