Corrected else if statement in powershell script.

Author: dlemstra

publish/publish.library.ps1

@@ -18,7 +18,7 @@ function createMagickNetLibraryNuGetPackage($library, $version, $commit, $pfxPas
     if ($library -eq "Magick.NET.SystemWindowsMedia") {
         addLibrary $xml $library "" "AnyCPU" "net462"
         addLibrary $xml $library "" "AnyCPU" "net8.0-windows"
-    } else if ($library -eq "Magick.NET.SystemDrawing") {
+    } elseif ($library -eq "Magick.NET.SystemDrawing") {
         addLibrary $xml $library "" "AnyCPU" "net462"
         addLibrary $xml $library "" "AnyCPU" "netstandard20"
         addLibrary $xml $library "" "AnyCPU" "net8.0-windows"