Update issue templates

Author: JorjMcKie

.github/ISSUE_TEMPLATE/bug_report.md

@@ -15,18 +15,18 @@ A clear and concise description of what the bug is.
 ## To Reproduce (mandatory)
 Explain the steps to reproduce the behavior, For example, include a minimal code snippet, example files, etc.
 
-## Expected behavior (mandatory)
-Describe what you expected to happen.
+## Expected behavior (optional)
+Describe what you expected to happen (if not obvious).
 
 ## Screenshots (optional)
 If applicable, add screenshots to help explain your problem.
 
 ## Your configuration (mandatory)
- - Operating system, bitness, potentially version.
+ - Operating system, potentially version and bitness
  - Python version, bitness
  - PyMuPDF version, installation method (wheel or source generated).
 
-For example, the output of `print(sys.version, "\n", fitz.__doc__)` would be sufficient.
+For example, the output of `print(sys.version, "\n", sys.platform, "\n", fitz.__doc__)` would be sufficient.
 
 ## Additional context (optional)
 Add any other context about the problem here.