List correct exceptions for AssemblyLoadContext.LoadUnmanagedDllFromPath

Author: CoffeeFlux

xml/System.Runtime.Loader/AssemblyLoadContext.xml

@@ -779,7 +779,8 @@ Each <xref:System.Runtime.Loader.AssemblyLoadContext> can load only:
         <exception cref="T:System.ArgumentNullException">
           <paramref name="unmanagedDllPath" /> is <see langword="null" />.</exception>
         <exception cref="T:System.ArgumentException">The <paramref name="unmanagedDllPath" /> argument is not an absolute path.</exception>
-        <exception cref="T:System.IO.FileNotFoundException">The unmanaged library cannot be found.</exception>
+        <exception cref="T:System.DllNotFoundException">The library can't be found.</exception>
+        <exception cref="T:System.BadImageFormatException">The library is not valid.</exception>
       </Docs>
     </Member>
     <Member MemberName="Name">