fix for #1076

Author: alejcas

O365/calendar.py

@@ -1593,7 +1593,7 @@ def get_body_soup(self):
         :return: Html body
         :rtype: BeautifulSoup
         """
-        if self.body_type != 'HTML':
+        if self.body_type.upper() != 'HTML':
             return None
         else:
             return bs(self.body, 'html.parser')