fix typo in property name

Author: siywilliams

FluentCommandLineParser/Internals/Parsing/OptionArgumentParser.cs

@@ -66,7 +66,7 @@ public void ParseArguments(IEnumerable<string> args, ParsedOption option)
 
 			option.Value = allArguments.FirstOrDefault();
 			option.Values = allArguments.ToArray();
-			option.AddtionalValues = additionalArguments.ToArray();
+			option.AdditionalValues = additionalArguments.ToArray();
 		}
 
 		private static void TryGetArgumentFromKey(ParsedOption option)

FluentCommandLineParser/Internals/Parsing/OptionParsers/ListCommandLineOptionParser.cs

@@ -78,7 +78,7 @@ public bool CanParse(ParsedOption parsedOption)
             var clone = parsedOption.Clone();
             clone.Value = value;
             clone.Values = new [] { value };
-            clone.AddtionalValues = new string[0];
+            clone.AdditionalValues = new string[0];
             return parser.CanParse(clone);
         });
     }

FluentCommandLineParser/Internals/Parsing/ParsedOption.cs

@@ -69,7 +69,7 @@ public ParsedOption()
 		/// <summary>
 		/// Gets or sets the additional values matched with this key.
 		/// </summary>
-		public string[] AddtionalValues { get; set; }
+		public string[] AdditionalValues { get; set; }
 
 		/// <summary>
 		/// Gets or sets the prefix for the key e.g. -, / or --.
@@ -144,7 +144,7 @@ public ParsedOption Clone()
 				Prefix = Prefix,
 				Suffix = Suffix,
 				Value = Value,
-				AddtionalValues = AddtionalValues,
+				AdditionalValues = AdditionalValues,
 				RawKey = RawKey,
 				Values = Values
 			};