Fix typos

examples/device/cdc_msc/src/main.c

@@ -113,7 +113,7 @@ void cdc_task(void)
     // connected and there are data available
     if ( tud_cdc_available() )
     {
-      // read datas
+      // read data
       char buf[64];
       uint32_t count = tud_cdc_read(buf, sizeof(buf));
       (void) count;