fix: Empty lines removed

en/manual/navigation/index.md

@@ -9,11 +9,8 @@ You can use the **navigation** system to control how characters and other object
 ## Set up navigation
 
 1. [Create a navigation group](navigation-groups.md)
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 2. [Add a navigation mesh](navigation-meshes.md)
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 3. [Add a navigation bounding box](navigation-bounding-boxes.md)
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 4. [Add a navigation component](navigation-components.md)
 
 ## Sample project