ci : fix whisper.dll path in build.yml

Author: danbev

.github/workflows/build.yml

@@ -1037,8 +1037,8 @@ jobs:
         run: |
           New-Item -Path "build\Release" -ItemType Directory -Force
 
-          Copy-Item -Path "whisper_x64.dll" -Destination "build\Release\whisper.dll" -Force
-          Write-Host "Copied whisper_x64.dll to build\Release\whisper.dll directory"
+          Copy-Item -Path "whisper.dll" -Destination "build\Release\whisper.dll" -Force
+          Write-Host "Copied whisper.dll to build\Release\whisper.dll directory"
 
           Copy-Item -Path "SDL2.dll" -Destination "build\Release\SDL2.dll" -Force
           Write-Host "Copied SDL2.dll to build\Release\SDL2.dll directory"