update chair to michal

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

content/groups/systemsoftware.md

@@ -1,13 +1,23 @@
 ---
-title: "System Software Workgroup"
+title: "System Software TWG"
 wgtype: twg
-chair: klauskiwi
+chair: michalzygowski
 members:
   - ibm
   - vantosh
   - yadro
   - 3mdeb
   - stevenmunroe
-date: 2021-03-15
+participation: "Members"
+git: https://git.openpower.foundation/systemsoftware
+discussion: https://discuss.openpower.foundation/c/twg/syssoftware/19
+calendar:
+  web: https://discuss.openpower.foundation/c/twg/syssoftware/19/l/calendar
+  ics: webcal://discuss.openpower.foundation/c/twg/syssoftware/l/calendar.ics
+chat:
+  mattermost: https://chat.openpower.foundation/opf/channels/systemsoftware
+files: https://files.openpower.foundation/f/475
+kanban: https://kanban.openpower.foundation/b/7ZvTJoH3sFbTF25Gk/system-software
+date: 2021-07-27
 draft: false
 ---