Update doc build

Author: NN---

CodeJamDoc.shfbproj

@@ -47,7 +47,7 @@
     </NamespaceSummaries>
     <MissingTags>Summary, Parameter, Returns, AutoDocumentCtors, Namespace, TypeParameter, AutoDocumentDispose</MissingTags>
     <VisibleItems>Attributes, InheritedMembers, InheritedFrameworkMembers, Protected, ProtectedInternalAsProtected, EditorBrowsableNever, NonBrowsable</VisibleItems>
-    <CopyrightText>RSDN, 2016-2018</CopyrightText>
+    <CopyrightText>RSDN, 2016-2021</CopyrightText>
     <PlugInConfigurations />
     <ComponentConfigurations>
       <ComponentConfig id="Code Block Component" enabled="True">

appveyor.doc.yml

@@ -3,14 +3,14 @@ image: Visual Studio 2022
 configuration: Release
 clone_folder: c:\projects\codejam
 environment:
-  SHFBROOT: C:\EWSoftware.SHFB.2018.12.10\tools\
+  SHFBROOT: C:\EWSoftware.SHFB.2021.11.7\tools\
 install:
 - cmd: >-
-    nuget install EWSoftware.SHFB -o c:\ -Version 2018.12.10
+    nuget install EWSoftware.SHFB -o c:\ -Version 2021.11.7
 
     nuget install EWSoftware.SHFB.NETFramework -o c:\projects\codejam
 
-    xcopy /E /S C:\EWSoftware.SHFB.2018.12.10 C:\EWSoftware.SHFB.2015.10.10.0\
+    xcopy /E /S C:\EWSoftware.SHFB.2021.11.7 C:\EWSoftware.SHFB.2015.10.10.0\
 before_build:
 - cmd: nuget restore CodeJam.sln
 build_script: