PR review changes

Author: paulirwin

src/Lucene.Net.Analysis.Common/Analysis/Compound/Hyphenation/HyphenationTree.cs

@@ -459,7 +459,7 @@ public virtual Hyphenation Hyphenate(ReadOnlySpan<char> w, int offset, int len,
             int k = 0;
 
             // check exception list first
-            string sw = word.Slice(1).ToString();
+            string sw = word.Slice(1, len).ToString();
             // LUCENENET: Eliminated extra lookup by using TryGetValue instead of ContainsKey
             if (m_stoplist.TryGetValue(sw, out IList<object> hw))
             {

src/Lucene.Net.Analysis.Common/Analysis/Compound/Hyphenation/TernaryTree.cs

@@ -156,7 +156,7 @@ public void Insert(string key, char val)
         /// keys.
         /// </summary>
         /// <remarks>
-        /// LUCENENET specific overload for ReadOnlySpan&lt;char&gt;
+        /// LUCENENET specific overload for <see cref="ReadOnlySpan{T}"/>
         /// </remarks>
         public virtual void Insert(ReadOnlySpan<char> key, char val)
         {