Update 01-parallel-programming.md

Author: csccva

intro-day/docs/01-parallel-programming.md

@@ -143,7 +143,7 @@ Simple domains with similar computational cost
 
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 <!-- Copyright CSC -->
-![](img/eparallel.svg){.center width=60%}
+![](img/eparallel.svg){.center width=70%}
 </div>
 
 <div class=column>