docs: fix a reference to README.md in Reliable.HttpClient.Caching

Author: akrisanov

src/Reliable.HttpClient.Caching/Reliable.HttpClient.Caching.csproj

@@ -40,7 +40,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <None Include="..\..\README.md" Pack="true" PackagePath="/" />
+    <None Include="README.md" Pack="true" PackagePath="/" />
   </ItemGroup>
 
   <ItemGroup>