Add comment about experimental thingy

data/conf/sogo/sogo.conf

@@ -83,7 +83,7 @@
   //SoDebugBaseURL = YES;
   //ImapDebugEnabled = YES;
   //SOGoEASDebugEnabled = YES;
-  SOGoEASSearchInBody = YES;
+  SOGoEASSearchInBody = YES; // Experimental. Enabled since 2023-10
   //LDAPDebugEnabled = YES;
   //PGDebugEnabled = YES;
   //MySQL4DebugEnabled = YES;