Misc small changes (#1433)

* Fix React key warning in HelpDialog

* Change "lyric" to "lyrics" in en.json

ui/src/dialogs/HelpDialog.js

@@ -39,9 +39,10 @@ const HelpTable = (props) => {
                     <TableCell align="left">
                       {sequences.map(({ sequence }) => (
                         <Chip
-                          label={<kbd key={sequence}>{sequence}</kbd>}
+                          label={<kbd>{sequence}</kbd>}
                           size="small"
                           variant={'outlined'}
+                          key={sequence}
                         />
                       ))}
                     </TableCell>

ui/src/i18n/en.json

@@ -344,13 +344,13 @@
         "previousTrackText": "Previous track",
         "reloadText": "Reload",
         "volumeText": "Volume",
-        "toggleLyricText": "Toggle lyric",
+        "toggleLyricText": "Toggle lyrics",
         "toggleMiniModeText": "Minimize",
         "destroyText": "Destroy",
         "downloadText": "Download",
         "removeAudioListsText": "Delete audio lists",
         "clickToDeleteText": "Click to delete %{name}",
-        "emptyLyricText": "No lyric",
+        "emptyLyricText": "No lyrics",
         "playModeText": {
             "order": "In order",
             "orderLoop": "Repeat",