Replace "may" by "can"

... the end of a great and fierce war.

main/ui/src/main/resources/i18n/strings.properties

@@ -111,7 +111,7 @@ unlock.error.invalidMountPoint.existing=Mount point "%s" already exists or paren
 # Lock
 ## Force
 lock.forced.heading=Graceful lock failed
-lock.forced.message=Locking "%s" was blocked by pending operations or open files. You may force lock this vault, however interrupting I/O may result in the loss of unsaved data.
+lock.forced.message=Locking "%s" was blocked by pending operations or open files. You can force lock this vault, however interrupting I/O may result in the loss of unsaved data.
 lock.forced.confirmBtn=Force Lock
 ## Failure
 lock.fail.heading=Locking vault failed.