Fix rendering and wrap to 100 chars

Author: Susurrus

src/sys/ioctl/mod.rs

@@ -5,22 +5,20 @@
 //! What is an `ioctl`?
 //! ===================
 //!
-//! The `ioctl` syscall is the grab-bag syscall on POSIX systems. Don't want
-//! to add a new syscall? Make it an `ioctl`! `ioctl` refers to both the syscall,
-//! and the commands that can be send with it. `ioctl` stands for "IO control",
-//! and the commands are always sent to a file descriptor.
+//! The `ioctl` syscall is the grab-bag syscall on POSIX systems. Don't want to add a new
+//! syscall? Make it an `ioctl`! `ioctl` refers to both the syscall, and the commands that can be
+//! sent with it. `ioctl` stands for "IO control", and the commands are always sent to a file
+//! descriptor.
 //!
 //! It is common to see `ioctl`s used for the following purposes:
 //!
-//! * Provide read/write access to out-of-band data related
-//!   to a device such as configuration (for instance, setting
-//!   serial port options)
-//! * Provide a mechanism for performing full-duplex data
-//!   transfers (for instance, xfer on SPI devices).
-//! * Provide access to control functions on a device (for example,
-//!   on Linux you can send commands like pause, resume, and eject
-//!   to the CDROM device.
-//! * Do whatever else the device driver creator thought made most sense.
+//!   * Provide read/write access to out-of-band data related to a device such as configuration
+//!     (for instance, setting serial port options)
+//!   * Provide a mechanism for performing full-duplex data transfers (for instance, xfer on SPI
+//!     devices).
+//!   * Provide access to control functions on a device (for example, on Linux you can send
+//!     commands like pause, resume, and eject to the CDROM device.
+//!   * Do whatever else the device driver creator thought made most sense.
 //!
 //! `ioctl`s are synchronous system calls and are similar to read and write calls in that regard.
 //! They operate on file descriptors and have an identifier that specifies what the ioctl is.
@@ -30,6 +28,7 @@
 //!
 //! Historically `ioctl` numbers were arbitrary hard-coded values. This changed to a more-ordered
 //! system where the ioctl numbers had various subcomponents:
+//!
 //!   * Number: The actual ioctl ID
 //!   * Type: A grouping of ioctls for a common purpose or driver
 //!   * Size: The size in bytes of the data that will be transferred