updated Readme file

README.md

@@ -32,8 +32,8 @@ The scripts 'SaturFitMonoExp.m' and 'SaturFitBiExp.m'
 * returns optimised parameters and fit function
 
 ## Data availability
-All Data could be downloaded upon request at corresponding author^{±} via this [link](https://www.google.com).
-^{±} [T-Y. Dora Tang](mailto:tang@mpi-cbg.de) 
+All Data could be downloaded upon request at corresponding author^± via this [link](https://www.google.com).  
+^± [T-Y. Dora Tang](mailto:tang@mpi-cbg.de)