Update bug_report.md

Adapt bug_report.md from opcua-asyncio and edit links.

Author: swamper123

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,23 +1,32 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: ''
-assignees: ''
+### Please read, before you post!
+
+This is a _**BUG REPORT for issues in the existing code**_. 
+
+If you have general questions, code handling problems or ideas, please use the:
+
+Discussionsboard: https://github.com/FreeOpcUa/python-opcua/discussions <br/> or <br />
+Gitter-Channel: https://gitter.im/FreeOpcUa/python-opcua
 
 ---
 
-This is a bug report. to get help go to https://github.com/FreeOpcUa/python-opcua/discussions
 
-**Describe the bug**
-A clear and concise description of what the bug is.
+To save some time, please provide us following informations, if possible:
+
 
-**To Reproduce**
-Steps to reproduce the behavior incl code:
+**Describe the bug** <br />
+A clear and concise description of what the bug is.
 
+**To Reproduce**<br />
+Steps to reproduce the behavior incl code. <br />
+If you post code, please use the "insert Code" (which is the "< >" symbol) format for a better readability.
 
-**Expected behavior**
+**Expected behavior**<br />
 A clear and concise description of what you expected to happen.
 
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
+**Screenshots**<br />
+If applicable, add screenshots to help explain your problem. <br />
+You can post Screenshots directly to github, please don't use 3rd Party webpages
+
+**Version**<br />
+Python-Version:<br />
+python-opcua Version (e.g. master branch, 0.9):