Made bug and PR templates have less visual distraction (#3038)

Author: jamesbraza

.github/ISSUE_TEMPLATE/bug-report.md

@@ -8,30 +8,38 @@ assignees: ""
 
 ## Issue
 
-Describe what's the expected behaviour and what you're observing.
+<!-- Describe what's the expected behaviour and what you're observing. -->
 
 ## Environment
 
 Provide at least:
 
 - OS:
-- `pip list` of the host Python where `tox` is installed:
+- `pip list` of the host Python where `tox` is installed in the dropdown below
+
+<details open>
+<summary>Output of <code>pip list</code></summary>
 
 ```console
 
 ```
 
+</details>
+
 ## Output of running tox
 
-Provide the output of `tox -rvv`:
+<details open>
+<summary>Output of <code>tox -rvv</code></summary>
 
 ```console
 
 ```
 
+</details>
+
 ## Minimal example
 
-If possible, provide a minimal reproducer for the issue:
+<!--  If possible, provide a minimal reproducer for the issue. -->
 
 ```console
 

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,7 +1,7 @@
-# Thanks for contribution
+<!-- Thank you for your contribution!
 
 Please, make sure you address all the checklists (for details on how see
-[development documentation](http://tox.readthedocs.org/en/latest/development.html#development))!
+[development documentation](http://tox.readthedocs.org/en/latest/development.html#development))! -->
 
 - [ ] ran the linter to address style issues (`tox -e fix`)
 - [ ] wrote descriptive pull request text