shared-bindings: Change docstrings with '\x...' chars to raw strings

Closes: #3032

Author: jepler

shared-bindings/_bleio/Address.c

@@ -78,7 +78,7 @@ STATIC mp_obj_t bleio_address_make_new(const mp_obj_type_t *type, size_t n_args,
 }
 
 //|     address_bytes: Any = ...
-//|     """The bytes that make up the device address (read-only).
+//|     r"""The bytes that make up the device address (read-only).
 //|
 //|     Note that the ``bytes`` object returned is in little-endian order:
 //|     The least significant byte is ``address_bytes[0]``. So the address will

shared-bindings/displayio/Display.c

@@ -50,7 +50,7 @@
 //|     contain the initialization sequence at minimum."""
 //|
 //|     def __init__(self, display_bus: Any, init_sequence: buffer, *, width: int, height: int, colstart: int = 0, rowstart: int = 0, rotation: int = 0, color_depth: int = 16, grayscale: bool = False, pixels_in_byte_share_row: bool = True, bytes_per_cell: int = 1, reverse_pixels_in_byte: bool = False, set_column_command: int = 0x2a, set_row_command: int = 0x2b, write_ram_command: int = 0x2c, set_vertical_scroll: int = 0, backlight_pin: microcontroller.Pin = None, brightness_command: int = None, brightness: bool = 1.0, auto_brightness: bool = False, single_byte_bounds: bool = False, data_as_commands: bool = False, auto_refresh: bool = True, native_frames_per_second: int = 60):
-//|         """Create a Display object on the given display bus (`displayio.FourWire` or `displayio.ParallelBus`).
+//|         r"""Create a Display object on the given display bus (`displayio.FourWire` or `displayio.ParallelBus`).
 //|
 //|         The ``init_sequence`` is bitpacked to minimize the ram impact. Every command begins with a
 //|         command byte followed by a byte to determine the parameter count and if a delay is need after.

shared-bindings/displayio/Palette.c

@@ -85,7 +85,7 @@ STATIC mp_obj_t group_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
 }
 
 //|     def __setitem__(self, index: Any, value: Any) -> Any:
-//|         """Sets the pixel color at the given index. The index should be an integer in the range 0 to color_count-1.
+//|         r"""Sets the pixel color at the given index. The index should be an integer in the range 0 to color_count-1.
 //|
 //|         The value argument represents a color, and can be from 0x000000 to 0xFFFFFF (to represent an RGB value).
 //|         Value can be an int, bytes (3 bytes (RGB) or 4 bytes (RGB + pad byte)), bytearray,

shared-bindings/nvm/ByteArray.c

@@ -32,7 +32,7 @@
 #include "supervisor/shared/translate.h"
 
 //| class ByteArray:
-//|     """Presents a stretch of non-volatile memory as a bytearray.
+//|     r"""Presents a stretch of non-volatile memory as a bytearray.
 //|
 //|     Non-volatile memory is available as a byte array that persists over reloads
 //|     and power cycles. Each assignment causes an erase and write cycle so its recommended to assign