fix: build error

Author: OMpawar-21

Contentstack.Management.Core/contentstack.management.core.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-  <PropertyGroup>
   <!-- On non-Windows (e.g. macOS/Linux), build only netstandard2.0; .NET Framework (net471/net472) is Windows-only and reference assemblies are not available. -->
-    <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
-      <TargetFrameworks>netstandard2.0;net471;net472</TargetFrameworks>
-    </PropertyGroup>
-    <PropertyGroup Condition="'$(OS)' != 'Windows_NT'">
-      <TargetFrameworks>netstandard2.0</TargetFrameworks>
-    </PropertyGroup>
+  <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
+    <TargetFrameworks>netstandard2.0;net471;net472</TargetFrameworks>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(OS)' != 'Windows_NT'">
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+  </PropertyGroup>
+  <PropertyGroup>
     <LangVersion>8.0</LangVersion>
     <Nullable>enable</Nullable>
     <Title>Contentstack Management</Title>