Update ISSUE_TEMPLATE

Author: Stanislaw Stempin

ISSUE_TEMPLATE

@@ -1,12 +1,10 @@
 <!--
-Before logging a new issue please make sure to:
-1) Read the FAQ: https://github.com/Microsoft/AL/wiki/Frequently-Asked-Questions
-2) Search if there is an existing issue for what you want to log. If it's closed you can reopen it and add your comments.
-3) Use the latest Developer Preview release both the server part and the AL Language extension in VS Code (listed on the repository home page: https://github.com/Microsoft/AL)
+For NAV 2018 issues please contact regular support channels. 
+This repo is dedicated only to the latest Business Central Developer Preview releases.
 
-To help us reproduce the issue and find the root please try to:
-A) Attach a minimal set of AL code that causes the issue
-B) If the error occurs on the server - copy/paste the server stack trace from the Event Viewer
+!!!Please, Please, Please!!! - Read the FAQ before posting:
+https://github.com/Microsoft/AL/wiki/Frequently-Asked-Questions
+Many questions are already answered and it will save time both for you and for us.
 -->
 
 <!-- Go to Visual Studio Code → Extensions panel → AL Language -->