docs: cleanup

docs/lua_api.rst

@@ -1263,14 +1263,14 @@ SceneGraph
 	Sets the local *pose* of the *transform*.
 
 **link** (sg, parent, child, child_local_position, child_local_rotation, child_local_scale)
-	Links `child` to `parent`. After linking the child will follow its
+	Links *child* to *parent*. After linking the child will follow its
 	parent. Set child_local_* to modify the child position after it has been
 	linked to the parent, otherwise che child will be positioned at the
 	location of its parent.
 
 **unlink** (sg, child)
-	Unlinks `child` from its parent if it has any. After unlinking, the local
-	pose of the @a child is set to its previous world pose.
+	Unlinks *child* from its parent if it has any. After unlinking, the local
+	pose of the *child* is set to its previous world pose.
 
 SoundWorld
 ===========