Delete blog.fr.md

01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/04.wave-optics-validity-overview/blog.fr.md

----
-title: 'Domaine de validité de l''optique ondulatoire'
-content:
-    items:
-        - '@self.children'
-    limit: 5
-    order:
-        by: date
-        dir: desc
-    pagination: true
-    url_taxonomy_filters: true
----
-