Update communication channels in the handshake document

Author: allnes

00-handshake/00-handshake.tex

@@ -148,8 +148,10 @@ \section{Practice details}
         \item Main communication channel:
             \begin{itemize}
                 \item Telegram channel—fast news, \ldots
-                \item GitHub Issues in practice's repo—bugs, common problems, slow CI, \ldots
+                \item GitHub Issues in practice's repo—bugs, repo problems \ldots
                 \item Lessons—Q\&A session, \ldots
+                \item Feedback form for other critical problems, \ldots
+                \item EMail for other non-critical problems, \ldots
             \end{itemize}
     \end{itemize}
 \end{frame}