hugo.toml: Tags instead of posts in navbar

It makes way more sense for how this theme works to have a link to
'tags' in the navbar instead of 'posts'.

Author: ariadnavigo

hugo.toml

@@ -99,9 +99,9 @@ pagination.pagerSize = 5
       #   name = "AnItem"
 
       [[languages.en.menu.main]]
-      	identifier = "posts"
-	name = "Posts"
-	url = "/posts"
+      	identifier = "tags"
+	name = "Tags"
+	url = "/tags"
 	weight = 1
 
       [[languages.en.menu.main]]