add hints about Hacktoberfest 2021 in Minsk events holded by Minsk Python Meetup

Author: shurph

index.html

@@ -156,7 +156,7 @@ <h3>Coding Dojo Minsk</h3>
                     <div style="/*background:#072540; color: #93c2db/**/">
                         <h3 style="color: #a14668; text-shadow: 2px 2px 0 #ff8de0">Hacktoberfest</h3>
                         <h4 style="margin-top: -3em; margin-bottom: 1.5em">
-                            in Minsk<sup>2020</sup>
+                            in Minsk<sup>2020, 2021</sup>
                         </h4>
                         <p>
                             The first local event in Minsk for the global Hacktoberfest initiative