Update textbook.en.md

5 years ago · b24911eb92
1 changed files with 1 additions and 3 deletions
--- a/12.temporary_ins/05.coordinates-systems/40.spherical-coordinates/10.main/textbook.en.md
+++ b/12.temporary_ins/05.coordinates-systems/40.spherical-coordinates/10.main/textbook.en.md
@ -1,11 +1,9 @@
 ---
 title: Coordonnées sphériques
 published: true
 published: false
 routable: false
 visible: false
 lessons:
    - slug:
      order: 
    - slug: spherical-coordinates-linear
      order: 1 
 ---