Fixed missing reference to updated logo

Cheatsheet.ipynb

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-![FAIRmat](FAIRmat_S.png)
+![FAIRmat](FAIRmatNewLogo.png)
 
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 # abtem-webtop container cheatsheet
 
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 The abtem-webtop container provides preinstalled and configured software for<br>
 ab-initio-guided image simulation in the field of electron microscopy.<br>
 The container contains the following tools:<br>
 * VESTA by K. Momma and F. Izumi (https://doi.org/10.1107/S0021889811038970) is a GUI tool for creating crystal structures.<br>
 * GPAW by J. J. Mortensen, E. J. Enkovaara et al. (https://iopscience.iop.org/article/10.1088/0953-8984/22/25/253202)<br>
   an projector augmented-wave electronic structure code.<br>
 * abTEM by J. Madsen et al. (https://open-research-europe.ec.europa.eu/articles/1-24) a tool for<br>
   simulating transmission electron microscopy images.<br>
 ***
 
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 # Getting started with VESTA
 
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 VESTA is available under /home/vesta/VESTA/VESTA. The GUI can be started by opening a terminal by clicking a terminal<br>
 panel on the right part of the jupyter-lab screen. The following command line call will start VESTA:<br>
 
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 ``` python
 ! /home/vesta/VESTA/VESTA
 ```
 
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 ## Getting started with gpaw and abTEM
 
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 This is a draft version of the container, created for testing and debugging purposes.<br>
 Further descriptions should be placed here once the container has been finalized.<br>