correct ISSUE_TEMPLATE wrt log access

.github/ISSUE_TEMPLATE/bug_report.md

@@ -23,8 +23,8 @@ Please fill out as much of this form as you can (leaving out stuff that is not a
 
 <!--
 Debug logs can be accessed from within the Delta Chat app 
-with a shake-gesture.
-Alternatively, use Xcode
+at "Settings / Advanced / View log / Console" and "Custom variables";
+alternatively, use Xcode.
 
 Logs may contain private data 
 which shall be removed or anonymised prior to posting.