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chardev: Revise comment on device node (#23)

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The device file create in this example is "chardev". 
So input command "sudo cat /dev/chardev" will get a valid message
"I already told you %d times Hello world!"
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demonsome 2021-07-31 23:03:16 +08:00 committed by GitHub
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commit 50e9d9176f
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examples/chardev.c
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@ -86,7 +86,7 @@ void cleanup_module(void)
/*
* Called when a process tries to open the device file, like
* "cat /dev/mycharfile"
* "sudo cat /dev/chardev"
*/
static int device_open(struct inode *inode, struct file *file)
{