Update bug description

Author: styfle

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: Create a report to help us improve
+about: Marked says it does this thing but does not
 
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@@ -25,6 +25,3 @@ Steps to reproduce the behavior:
 
 **Expected behavior**
 A clear and concise description of what you expected to happen.
-
-**Additional context**
-Add any other context about the problem here.