Clean up build warnings (#5884)

* Clean up warnings in compile for documentation notes

* remove snk from local build

Co-authored-by: jfleisher <jofleish@microsoft.com>
Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/api/dotnet/NativeModel.cs

@@ -251,12 +251,14 @@ namespace Microsoft.Z3
             public Z3_ast Else;
 
             /// <summary>
+            /// Domain for array
             /// Updates.Keys
             /// </summary>
             public Z3_ast[] Domain;
 
             /// <summary>
-            /// Updates.Range
+            /// Range for array
+            /// Updates.Values
             /// </summary>
             public Z3_ast[] Range;
         }