Update .CONTRIBUTING.md

Co-authored-by: Erin Shaben <[email protected]>

Author: brunopgalvao

.CONTRIBUTING.md

@@ -245,10 +245,10 @@ Available categories for tutorials are found in [scripts/llms_config.json](./scr
 
 ### Tutorial Requirements
 
-- All code examples must be tested and functional
-- Always specify dependency versions (e.g., `npm install [email protected]`)
-- Use action-oriented section titles
-- Include verification steps
+- All code examples must be tested and functional.
+- Always specify dependency versions (e.g., `npm install [email protected]`).
+- Use action-oriented section titles.
+- Include verification steps.
 
 ## Working with Content Elements