[Spine] Fix reference link (#377)

Author: D8H

docs/gdevelop5/objects/spine/index.md

@@ -49,4 +49,4 @@ You can explore example(s) to see how a Spine object is integrated in a GDevelop
 
 ## References
 
-You can browse all the actions, conditions and expressions related to [the Spine object on this reference page](/gdevelop5/all-features/spine/reference/)
+You can browse all the actions, conditions and expressions related to [the Spine object on this reference page](/gdevelop5/all-features/spine-object/reference/)

mkdocs.yml

@@ -365,4 +365,3 @@ plugins:
         "fr/gdevelop5/publishing/publishing-to-itch-io.md": "gdevelop5/publishing/publishing-to-itch-io.md"
         "es/gdevelop5/behaviors/platformer/index.md": "gdevelop5/behaviors/platformer/index.md"
         "ja/gdevelop5/publishing/android_and_ios.md": "gdevelop5/publishing/android_and_ios_with_cordova.md"
-        "gdevelop5/all-features/spine/reference.md": "gdevelop5/all-features/spine-object/reference.md"