Documented the IndexPrefix enumeration in the library target.

Test/Sources/Cases/Internal/Enumerations/IndexPrefixTests.swift

@@ -0,0 +1,34 @@
+import Testing
+
+@testable import AppLibrary
+
+@Suite("IndexPrefix")
+struct IndexPrefixTests {
+
+    @Test(arguments: zip(IndexPrefix.allCases, [String].paths))
+    func path(
+        for prefix: IndexPrefix,
+        expects pathExpected: String
+    ) async throws {
+        // GIVEN
+        // WHEN
+        let path = prefix.path
+        
+        // THEN
+        #expect(path == pathExpected)
+    }
+
+}
+
+// MARK: - Collection+Strings
+
+private extension Collection where Element == String {
+    
+    // MARK: Properties
+    
+    static var paths: [Element] {[
+        "/documentation",
+        "/tutorials"
+    ]}
+    
+}