Rename 'downloadPlaylist' to 'copyHlsPlaylist'

src/assets/locales/en.json

@@ -243,7 +243,7 @@
     "menus": {
       "downloads": {
         "disclaimer": "Downloads are taken directly from the provider. movie-web does not have control over how the downloads are provided.",
-        "downloadPlaylist": "Copy playlist link",
+        "copyHlsPlaylist": "Copy playlist link",
         "downloadSubtitle": "Download current subtitle",
         "downloadVideo": "Download video",
         "hlsDisclaimer": "Downloads are taken directly from the provider. movie-web does not have control over how the downloads are provided.<br /><br />Please note that you are downloading an HLS playlist, <bold>it is not recommended to download if you are not familiar with advanced streaming formats</bold>. Try different sources for different formats.",