osx: fix typo in README (#7283)

plugins/osx/README.md

@@ -56,6 +56,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 | `man-preview`   | Open a specified man page in Preview app            |
 | `showfiles`     | Show hidden files                                   |
 | `hidefiles`     | Hide the hidden files                               |
-| `itunes`        | Control iTunes. User `itunes -h` for usage details  |
+| `itunes`        | Control iTunes. Use `itunes -h` for usage details   |
 | `spotify`       | Control Spotify and search by artist, album, track… |
 | `rmdsstore`     | Remove .DS\_Store files recursively in a directory  |