Move many paige.metadata.* params to paige

exampleSite/config.yaml

@@ -60,9 +60,15 @@ params:
     will_faught:
       name: "Will Faught"
   paige:
+    authors:
+      hide: true
     credit:
       link:
         hide: true
+    date:
+      hide: true
+    git:
+      commit_url_prefix: "https://github.com/willfaught/paige/commit/"
     list:
       authors:
         hide: true
@@ -76,20 +82,12 @@ params:
         hide: true
       terms:
         hide: true
-    main:
-      metadata:
-        authors:
-          hide: true
-        date:
-          hide: true
-        git:
-          commit_url_prefix: "https://github.com/willfaught/paige/commit/"
-        reading_time:
-          hide: true
-        terms:
-          hide: true
-      table_of_contents:
-        hide: true
+    reading_time:
+      hide: true
+    table_of_contents:
+      hide: true
+    terms:
+      hide: true
 social:
   twitter: "username"
 theme: "paige"