Fixed link to md file in mkdocs.yml

Use / instead of \ as directory separator

Author: michalbundyra

mkdocs.yml

@@ -32,7 +32,7 @@ pages:
         - Url: helpers/url.md
         - "Advanced usage of helpers": helpers/advanced-usage.md
     - Cookbook:
-        - "Setting module-specific Layouts": cookbook\setting-module-specific-layouts.md
+        - "Setting module-specific Layouts": cookbook/setting-module-specific-layouts.md
 site_name: zend-view
 site_description: 'Flexible view layer supporting and providing multiple view layers, helpers, and more.'
 repo_url: 'https://github.com/zendframework/zend-view'