switch to the "diary" theme

.gitmodules

@@ -2,3 +2,7 @@
 	path = themes/cocoa
 	url = https://github.com/nmasse-itix/cocoa-hugo-theme.git
 	branch = nmasse-itix
+[submodule "themes/diary"]
+	path = themes/diary
+	url = https://github.com/nmasse-itix/hugo-theme-diary.git
+	branch = www.itix.fr

config.toml

@@ -2,7 +2,7 @@ baseURL                = "https://www.itix.fr/"
 languageCode           = "en-us"
 title                  = "Nicolas Massé"
 author                 = "Nicolas Massé"
-theme                  = "cocoa"
+theme                  = "diary"
 pygmentsUseClasses     = true
 pygmentsCodefences     = true
 enableRobotsTXT        = true

themes/diary

@@ -0,0 +1 @@
+Subproject commit f612ddd985c218bf056db32412477acf65f63d6b