Issue template: use details for nvim --version output

.github/ISSUE_TEMPLATE/bug_report.md

@@ -16,16 +16,20 @@ Run `TSUpdate`.
 //-->
 
 **Describe the bug**
+
 A clear and concise description of what the bug is.
 
 **To Reproduce**
+
 Steps to reproduce the behavior:
+
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error
 
 **Expected behavior**
+
 A clear and concise description of what you expected to happen.
 
 **Output of `:checkhealth nvim_treesitter`**
@@ -39,9 +43,15 @@ Paste the output here
 </details>
 
 **Output of `nvim --version`**
-```
-Paste your output here
-```
+
+<details>
+<code>
+
+Paste the output here
+
+</code>
+</details>
 
 **Additional context**
+
 Add any other context about the problem here.