fix code comments in llamareranker file

Author: nipeone

LLama/LLamaReranker.cs

@@ -100,6 +100,7 @@ public async Task<IReadOnlyList<float>> GetRelevanceScores(string input, IReadOn
     /// <param name="input"></param>
     /// <param name="document"></param>
     /// <param name="cancellationToken"></param>
+    /// <param name="normalize">Whether to normalize the score to the range (0, 1)</param>
     /// <returns></returns>
     /// <exception cref="RuntimeError"></exception>
     /// <exception cref="NotSupportedException"></exception>