Review feedback 3

Author: troydai

src/Microsoft.Extensions.WebEncoders.Core/UrlPathDecoder.cs

@@ -19,11 +19,16 @@ public class UrlPathDecoder
         /// <summary>
         /// Unescape a url char array in place. Returns the length of the result.
         /// 
-        /// - Everything is unescaped except %2F ('\')
+        /// - Everything is unescaped except %2F ('/')
         /// - UTF8 bytes are tested for formatting, overlong encoding, surrogates and value ranges
         /// - Invalid escaped sequence are copied to output as is
         /// - It doesn't check if the string contains query
         /// </summary>
+        /// <param name="buffer">
+        /// The char array contains sequence of charactors to be decoded. The
+        /// result will be saved in the same array.
+        /// </param>
+        /// <returns>The length of the result.</returns>
         public static int DecodeInPlace(char[] buffer)
         {
             if (buffer == null)
@@ -42,11 +47,13 @@ public static int DecodeInPlace(char[] buffer)
         /// <summary>
         /// Unescape a url path string.
         /// 
-        /// - Everything is unescaped except %2F ('\')
+        /// - Everything is unescaped except %2F ('/')
         /// - UTF8 bytes are tested for formatting, overlong encoding, surrogates and value ranges
         /// - Invalid escaped sequence are copied to output as is
         /// - It doesn't check if the string contains query
         /// </summary>
+        /// <param name="original">The string to be decoded.</param>
+        /// <returns>The decoded result.</returns>
         public static string Decode(string original)
         {
             if (original == null)