update contributind.md

Author: todortodorovic

.CONTRIBUTING/tutorials/.CONTRIBUTING.md

@@ -84,25 +84,30 @@ categories: Category1, Category2
 Once you've defined your tutorial path, ensure images and code snippets follow the same structure.
 
 **Tutorial file:**
+
 ```
 tutorials/[category]/[subcategory]/[tutorial-name].md
 ```
 
 **Supporting files:**
+
 ```
 images/tutorials/[category]/[subcategory]/[tutorial-name]/
 .snippets/code/tutorials/[category]/[subcategory]/[tutorial-name]/
 ```
 
 **Image naming convention:**
+
 ```
 images/tutorials/[category]/[subcategory]/[tutorial-name]/[tutorial-name-01.webp]
 ```
+
 Where the number will be 01, 02, 03, etc.
 
-### 3. Navigation Update (Critical)
+### 3. Navigation Update
 
 **Must update `.nav.yml` files** or your tutorial won't appear in the left-side menu:
+
 ```yaml
 # In appropriate .nav.yml file
 - 'Display Title': tutorial-filename.md
@@ -129,21 +134,27 @@ Where the number will be 01, 02, 03, etc.
 # Tutorial Title
 
 ## Introduction
+
 [Brief explanation of what users will learn/build]
 
 ## Prerequisites
+
 - [Required knowledge/tools]
 
 ## [Action-Oriented Section Title]
+
 [Instructions with commands]
 
 ## [Another Action-Oriented Section Title]
+
 [Instructions with commands]
 
 ## Verification
+
 [How to confirm it worked]
 
 ## Where to Go Next
+
 [Related tutorials]
 ```
 
@@ -177,7 +188,7 @@ If you choose the self-managed path, you must follow **all** requirements in [ST
 
 - Complete metadata specifications
 - Image optimization and formatting
-- Navigation file updates (.nav.yml)
+- Navigation file updates (`.nav.yml`)
 - Advanced style and formatting rules
 - SEO optimization requirements