unix: fix typos and reflow comments on IoctlFile* functions

Change-Id: I9be66514d6b5c8c85e7e424c4aa7856d0f4d884d
Reviewed-on: https://go-review.googlesource.com/c/sys/+/259557
Trust: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Johan Brandhorst <johan.brandhorst@gmail.com>
diff --git a/unix/syscall_linux.go b/unix/syscall_linux.go
index 122e7eb..84a9e52 100644
--- a/unix/syscall_linux.go
+++ b/unix/syscall_linux.go
@@ -121,9 +121,9 @@
 	return &value, err
 }
 
-// IoctlFileClone performs an FICLONERANGE ioctl operation to clone the range of
-// data conveyed in value to the file associated with the file descriptor
-// destFd. See the ioctl_ficlonerange(2) man page for details.
+// IoctlFileCloneRange performs an FICLONERANGE ioctl operation to clone the
+// range of data conveyed in value to the file associated with the file
+// descriptor destFd. See the ioctl_ficlonerange(2) man page for details.
 func IoctlFileCloneRange(destFd int, value *FileCloneRange) error {
 	err := ioctl(destFd, FICLONERANGE, uintptr(unsafe.Pointer(value)))
 	runtime.KeepAlive(value)
@@ -137,9 +137,9 @@
 	return ioctl(destFd, FICLONE, uintptr(srcFd))
 }
 
-// IoctlFileClone performs an FIDEDUPERANGE ioctl operation to share the range of
-// data conveyed in value with the file associated with the file descriptor
-// destFd. See the ioctl_fideduperange(2) man page for details.
+// IoctlFileDedupeRange performs an FIDEDUPERANGE ioctl operation to share the
+// range of data conveyed in value with the file associated with the file
+// descriptor destFd. See the ioctl_fideduperange(2) man page for details.
 func IoctlFileDedupeRange(destFd int, value *FileDedupeRange) error {
 	err := ioctl(destFd, FIDEDUPERANGE, uintptr(unsafe.Pointer(value)))
 	runtime.KeepAlive(value)