Documented the AssetPrefix enumeration in the library target.

Library/Sources/Internal/Enumerations/AssetPrefix.swift

@@ -1,11 +1,20 @@
+/// An enumeration that represents all possible static assets folder where assets included into the `DocC`catalog and code generated by the `DocC` building process. will be stored.
 enum AssetPrefix: String, CaseIterable {
+    /// A folder that contains all CSS code generated by the `DocC` building process.
     case css
+    /// A folder that contains all documentation data extracted from the source code by the `DocC` building process.
     case data
+    /// A folder that contains all other resources included into the `DocC` documentation catalog.
     case downloads
+    /// A folder that contains all image resources included into the `DocC` documentation catalog.
     case images
+    /// A folder that contains all image resources included into the `DocC` documentation catalog.
     case img
+    /// A folder that contains all `HTML` code generated by the `DocC` building process.
     case index
+    /// A folder that contains all `Javascript` code generated by the `DocC` building process.
     case js
+    /// A folder that contains all video resources included into the `DocC` documentation catalog.
     case videos
 }
 
@@ -16,7 +25,7 @@ extension AssetPrefix: Pathable {
     // MARK: Computed
     
     var path: String {
-        .init(format: .Format.pathRoot, rawValue)
+        .init(format: .Format.Path.root, rawValue)
     }
     
 }