Fix typo

Author: Exanite

sources/SilkTouch/SilkTouch/Naming/NameUtils.cs

@@ -114,7 +114,7 @@ public static string FindCommonPrefix(
     /// Finds a common prefix in a set of names with respect to the word boundaries
     /// </summary>
     /// <param name="names">Set of names, snake_case</param>
-    /// <param name="allowFullMatch">Allows result to be a a full match with one of the names</param>
+    /// <param name="allowFullMatch">Allows result to be a full match with one of the names</param>
     /// <param name="maxLen">Match length limit</param>
     /// <param name="naive">
     /// Just match the start of the strings, don't bother checking for obvious name separation gaps.