Wrong version of .NET Core in one of the projects

Demos/DemoFunc.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Books.ConsoleApp;
 
 public class DemoFunc
 {
@@ -22,7 +23,7 @@ public class DemoFunc
         Func<string> helloWorldFunc = AsFunc("Hello World!");
         var helloWorld = Exec(helloWorldFunc);
         // helloWorld == "Hello World!"
-        
+
         intFunc = AsFunc(1);
         var one = Exec(intFunc);
         // one == 1);
@@ -37,7 +38,8 @@ public class DemoFunc
 
 
         Func<IEnumerable<BooksByAuthor>, string, BooksByAuthor> getGataloguedAuthor =
-            (booksByAuthor, authorName) => {
+            (booksByAuthor, authorName) =>
+            {
                 // can do complex stuff or help in debugging
                 return booksByAuthor.FirstOrDefault(ba => ba.Author == authorName);
             };

Demos/Demos.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>