keep the latest inheritdoc only (#692)

* keep the latest inheritdoc only

* update mdoc version to 5.9.3.1

* update format

Author: TinaLiu02

Diff for: mdoc/Consts.cs

@@ -3,7 +3,7 @@ namespace Mono.Documentation
 {
     public static class Consts
     {
-        public static string MonoVersion = "5.9.3";
+        public static string MonoVersion = "5.9.3.1";
         public const string DocId = "DocId";
         public const string CppCli = "C++ CLI";
         public const string CppCx = "C++ CX";

Diff for: mdoc/Mono.Documentation/Updater/MsxdocDocumentationImporter.cs

@@ -73,8 +73,8 @@ public override void ImportDocumentation (DocsNodeInfo info)
                 if (DocUtils.NeedsOverwrite(e["returns"]))
                     MDocUpdater.ClearElement(e, "returns");
             }
-            
-            
+            if (elem.SelectSingleNode("inheritdoc") != null)
+                MDocUpdater.ClearElement(e, "inheritdoc");
 
             foreach (XmlNode child in elem.ChildNodes)
             {

Diff for: mdoc/mdoc.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>mdoc</id>
-    <version>5.9.3</version>
+    <version>5.9.3.1</version>
     <title>mdoc</title>
     <authors>Microsoft</authors>
     <owners>Microsoft</owners>