Usb.cpp: Fix typos when unable to disable USB data

If Usb.cpp cannot write a zero value to the USB_DATA_PATH file, display
the message of "Not able to turn off usb connection notification".

Test: refactoring CL. Existing tests still pass.
Bug: 301016122
Change-Id: I0c5b7c4dc5bfe21ba17058536b5014eb5d69d1f3
diff --git a/usb/usb/Usb.cpp b/usb/usb/Usb.cpp
index 6993275..7a14888 100644
--- a/usb/usb/Usb.cpp
+++ b/usb/usb/Usb.cpp
@@ -133,7 +133,7 @@
         }
 
         if (!WriteStringToFile("0", USB_DATA_PATH)) {
-            ALOGE("Not able to turn on usb connection notification");
+            ALOGE("Not able to turn off usb connection notification");
             result = false;
         }
     }