Adapt structure for better styling

Author: mhatzl

arewesafetycriticalyet.org/docs/tooling/2_tools-list.mdx

@@ -13,20 +13,18 @@ Please get in touch with the tool authors and vendors **before** starting your p
 
 If you want to add or update the list, please open an issue on the [safety-critical-rust-consortium](https://github.com/rustfoundation/safety-critical-rust-consortium/issues) repository, or on the Rust Zulip [safety-critical-consortium](https://rust-lang.zulipchat.com/#narrow/channel/445688-safety-critical-consortium) channel.
 
-## Acceptance Criteria
+### Acceptance Criteria
 
 Tools will be included in the list only if they meet the following criteria.
 
-Note: even if the tool fulfill all the listed criteria the SCRC may ask the maintainer/owner of the tool for a presentation/demonstration for better evaluation.
-
-### Close Source
-- Tool still supported by vendor.
+**Close Source:**
+- Tool still supported by vendor
 - First productive release: > 1 year old
 
-### Open Source
-- First project publishing date : > 1 year old
+**Open Source:**
+- First project publishing date: > 1 year old
 - Last update: < 1 year old
 
-
+**Note:** Even if the tool fulfills all the listed criteria the SCRC may ask the maintainer/owner of the tool for a presentation/demonstration for better evaluation.
 
 <ToolsList />