Update src/SourceFlow/SourceFlow.csproj

updated readme documentation to net462

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Najaf Shaikh <najaf.shaikh@intelliflo.com>

Author: Nshai

src/SourceFlow/SourceFlow.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net462;netstandard2.0;netstandard2.1;net9.0</TargetFrameworks>
+    <TargetFrameworks>net464;netstandard2.0;netstandard2.1;net9.0</TargetFrameworks>
     <Version>1.0.0-alpha.1</Version>
     <RepositoryUrl>https://github.com/CodeShayk/SourceFlow.Net</RepositoryUrl>
     <RepositoryType>git</RepositoryType>