:sparkles: Categorize icons as icons

Instead of main images.

src/contact/content.meta.yml

@@ -1,7 +1,7 @@
 ---
 title: Contact
 img:
-        main:
+        icon:
                 path: "/include/icon/icons8-96-filled-message.png"
                 alt: "envelope flat icon"
 subtitle: Retrouvez ici différents moyens pour me contacter

src/credit/content.meta.yml

@@ -1,7 +1,7 @@
 ---
 title: Credit
 img:
-        main:
+        icon:
                 path: "/include/icon/iconmonstr-72-copyright-2.png"
                 alt: "copyright flat icon"
 date: 2023-05-20

src/cv/content.meta.yml

@@ -1,7 +1,7 @@
 ---
 title: CV
 img:
-        main:
+        icon:
                 path: "/include/icon/icons8-96-parse-from-clipboard.png"
                 alt: "cv flat icon"
 subtitle: Ingénieur développement logiciel

src/error404/content.meta.yml

@@ -1,7 +1,7 @@
 ---
 title: 404
 img:
-        main:
+        icon:
                 path: "/include/icon/icons8-96-matrix-desktop.png"
                 alt: "matrix reloaded flat icon"
 subtitle: Page non trouvée

src/index.meta.yml

@@ -1,7 +1,7 @@
 ---
 title: Jovian HERSEMEULE
 img:
-        main:
+        icon:
                 path: "/include/icon/icons8-96-city.png"
                 alt: "sympathic city flat icon"
 subtitle: "Bienvenue sur mon site !"

src/projets/content.meta.yml

@@ -1,7 +1,7 @@
 ---
 title: Projets
 img:
-        main:
+        icon:
                 path: "/include/icon/icons8-96-code.png"
                 alt: "code flat icon"
 subtitle: Mon folio de développeur