Restored license on pr MDAnalysis#5165

Author: tani-dubey

package/MDAnalysis/analysis/msd.py

@@ -27,7 +27,7 @@
 
 :Authors: Hugo MacDermott-Opeskin
 :Year: 2020
-:Copyright: Lesser GNU Public License v2.1
+:Copyright: Lesser GNU Public License v2.1+
 
 This module implements the calculation of Mean Squared Displacements (MSDs)
 by the Einstein relation. MSDs can be used to characterize the speed at