Update bug-report.md

Author: joelhawksley

.github/ISSUE_TEMPLATE/bug-report.md

@@ -3,6 +3,8 @@ name: ViewComponent bug report
 about: Create a report to help us improve ViewComponent
 ---
 
+<!-- If possible, please open a PR with a failing test instead of a bug report, as failing tests are much more actionable. -->
+
 <!--
 When opening an issue to describe a bug, it's helpful to provide steps to reproduce it, either with failing tests in a pull request, or by sharing a repository that demonstrates the issue. See CONTRIBUTING.md for more details.
 -->
@@ -16,6 +18,8 @@ When opening an issue to describe a bug, it's helpful to provide steps to reprod
 ### Actual behavior
 <!-- Tell us what happens instead -->
 
+**Backtrace**:
+
 ### System configuration
 **Rails version**: