Correct typos

README.md

@@ -43,7 +43,7 @@ Please cite this plugins as follows:
 
 Please also cite the Icy software and mention the version of Icy you used (bottom right corner of the GUI or first lines of the Output tab):     
 de Chaumont, F. et al. (2012) Icy: an open bioimage informatics platform for extended reproducible research, [Nature Methods](https://www.nature.com/articles/nmeth.2075), 9, pp. 690-696       
-https://icy.bioimageanalysis.org    
+http://icy.bioimageanalysis.org    
 
 
 
@@ -52,7 +52,7 @@ https://icy.bioimageanalysis.org
 Stephane Dallongeville
 
 
-## Additionnal information
+## Additional information