[Docs]: Fix Metadata Reference (#5668)

* Turn on `ProduceReferenceAssembly`

* Add `ProduceReferenceAssembly` to `common.props`

* Fix build failures in Akka.FSharp

* Revert `<ProduceReferenceAssembly>$(ProduceReferenceAssembly)</ProduceReferenceAssembly>` added to affected projects because it already exists in `common.props'

Author: eaba

src/common.props

@@ -22,6 +22,7 @@
     <NetFrameworkTestVersion>net471</NetFrameworkTestVersion>
     <NetStandardLibVersion>netstandard2.0</NetStandardLibVersion>
     <FluentAssertionsVersion>5.10.3</FluentAssertionsVersion>
+    <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
     <FsCheckVersion>2.16.3</FsCheckVersion>
     <HoconVersion>2.0.3</HoconVersion>
     <ConfigurationManagerVersion>4.7.0</ConfigurationManagerVersion>

src/core/Akka.FSharp.Tests/Akka.FSharp.Tests.fsproj

@@ -4,7 +4,8 @@
 
   <PropertyGroup>
     <AssemblyTitle>Akka.FSharp.Tests</AssemblyTitle>
-    <TargetFrameworks>$(NetFrameworkTestVersion);$(NetTestVersion);$(NetCoreTestVersion)</TargetFrameworks>
+    <TargetFrameworks>$(NetCoreTestVersion)</TargetFrameworks>
+    <ProduceReferenceAssembly>false</ProduceReferenceAssembly>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 

src/core/Akka.FSharp/Akka.FSharp.fsproj

@@ -7,6 +7,7 @@
     <TargetFrameworks>$(NetStandardLibVersion)</TargetFrameworks>
     <PackageTags>$(AkkaPackageTags);F#;fsharp</PackageTags>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <ProduceReferenceAssembly>false</ProduceReferenceAssembly>
     <NoWarn></NoWarn>    
   </PropertyGroup>
 

src/core/Akka.Persistence.FSharp/Akka.Persistence.FSharp.fsproj

@@ -7,6 +7,7 @@
     <TargetFrameworks>$(NetStandardLibVersion)</TargetFrameworks>
     <PackageTags>akka;actors;actor model;Akka;concurrency;F#;Fsharp;persistence;eventsource</PackageTags>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <ProduceReferenceAssembly>false</ProduceReferenceAssembly>
   </PropertyGroup>
 
   <ItemGroup>