recovery: Add ability to unmount system

* Correct system mount text while we are at it

Change-Id: I955173e84767e61d729fb55b4e53a84e310e786e

recovery.cpp: Fix typo when unmounting system

Signed-off-by: Mohammad Hasan Keramat J <ikeramat@protonmail.com>
Change-Id: I86c245c1e624bea045eac25657af02b45cd1d605
diff --git a/recovery_ui/device.cpp b/recovery_ui/device.cpp
index 34c4ce9..a740fbd 100644
--- a/recovery_ui/device.cpp
+++ b/recovery_ui/device.cpp
@@ -42,7 +42,7 @@
   { "Enter fastboot", Device::ENTER_FASTBOOT },
   { "Reboot to bootloader", Device::REBOOT_BOOTLOADER },
   { "Reboot to recovery", Device::REBOOT_RECOVERY },
-  { "Mount /system", Device::MOUNT_SYSTEM },
+  { "Mount/unmount system", Device::MOUNT_SYSTEM },
   { "View recovery logs", Device::VIEW_RECOVERY_LOGS },
   { "Enable ADB", Device::ENABLE_ADB },
   { "Run graphics test", Device::RUN_GRAPHICS_TEST },