Fix up onewireio docs and other notes

Not all of the notes were marked correctly.

shared-bindings/_bleio/Adapter.c

@@ -197,10 +197,10 @@ const mp_obj_property_t bleio_adapter_name_obj = {
 //|         """Starts advertising until `stop_advertising` is called or if connectable, another device
 //|         connects to us.
 //|
-//|         .. warning: If data is longer than 31 bytes, then this will automatically advertise as an
+//|         .. warning:: If data is longer than 31 bytes, then this will automatically advertise as an
 //|            extended advertisement that older BLE 4.x clients won't be able to scan for.
 //|
-//|         .. note: If you set ``anonymous=True``, then a timeout must be specified. If no timeout is
+//|         .. note:: If you set ``anonymous=True``, then a timeout must be specified. If no timeout is
 //|            specified, then the maximum allowed timeout will be selected automatically.
 //|
 //|         :param ~_typing.ReadableBuffer data: advertising data packet bytes

shared-bindings/canio/__init__.c

@@ -80,7 +80,7 @@ MAKE_ENUM_VALUE(canio_bus_state_type, bus_state, BUS_OFF, BUS_STATE_OFF);
 //|     ERROR_WARNING: object
 //|     """The bus is in the normal (active) state, but a moderate number of errors have occurred recently.
 //|
-//|     NOTE: Not all implementations may use ERROR_WARNING.  Do not rely on seeing ERROR_WARNING before ERROR_PASSIVE."""
+//|     .. note:: Not all implementations may use ``ERROR_WARNING``.  Do not rely on seeing ``ERROR_WARNING`` before ``ERROR_PASSIVE``."""
 //|
 //|     ERROR_PASSIVE: object
 //|     """The bus is in the passive state due to the number of errors that have occurred recently.

shared-bindings/keypad/EventQueue.c

@@ -68,7 +68,7 @@ MP_DEFINE_CONST_FUN_OBJ_1(keypad_eventqueue_get_obj, keypad_eventqueue_get);
 //|         Note that the queue size is limited; see ``max_events`` in the constructor of
 //|         a scanner such as `Keys` or `KeyMatrix`.
 //|
-//|         :return ``True`` if an event was available and stored, ``False`` if not.
+//|         :return: ``True`` if an event was available and stored, ``False`` if not.
 //|         :rtype: bool
 //|         """
 //|         ...

shared-bindings/onewireio/OneWire.c

@@ -35,20 +35,16 @@
 #include "shared-bindings/util.h"
 
 //| class OneWire:
-//|     """Lowest-level of the Maxim OneWire protocol"""
-//|
 //|     def __init__(self, pin: microcontroller.Pin) -> None:
-//|         """(formerly Dallas Semi) OneWire protocol.
+//|         """Create a OneWire object associated with the given pin.
 //|
-//|         Protocol definition is here: https://www.maximintegrated.com/en/app-notes/index.mvp/id/126
-//|
-//|         .. class:: OneWire(pin)
-//|
-//|           Create a OneWire object associated with the given pin. The object
-//|           implements the lowest level timing-sensitive bits of the protocol.
+//|           The object implements the lowest level timing-sensitive bits of the protocol.
 //|
 //|           :param ~microcontroller.Pin pin: Pin connected to the OneWire bus
 //|
+//|           .. note:: The OneWire class is available on `busio` and `bitbangio` in CircuitPython
+//|                     7.x for backwards compatibility but will be removed in CircuitPython 8.0.0.
+//|
 //|           Read a short series of pulses::
 //|
 //|             import onewireio

shared-bindings/onewireio/__init__.c

@@ -35,7 +35,9 @@
 
 #include "py/runtime.h"
 
-//| """Low-level bit primitives for """
+//| """Low-level bit primitives for Maxim (formerly Dallas Semi) one-wire protocol.
+//|
+//|    Protocol definition is here: https://www.maximintegrated.com/en/app-notes/index.mvp/id/126"""
 //|
 
 STATIC const mp_rom_map_elem_t onewireio_module_globals_table[] = {

shared-bindings/traceback/__init__.c

@@ -73,7 +73,7 @@ STATIC void traceback_exception_common(mp_print_t *print, mp_obj_t value, mp_obj
 //|     these lines are concatenated and printed, exactly the same text is
 //|     printed as does print_exception().
 //|
-//|     .. note: Setting `chain` will have no effect as chained exceptions are not yet implemented.
+//|     .. note:: Setting ``chain`` will have no effect as chained exceptions are not yet implemented.
 //|
 //|     :param Type[BaseException] etype: This is ignored and inferred from the type of ``value``.
 //|     :param BaseException value: The exception. Must be an instance of `BaseException`.
@@ -112,7 +112,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_KW(traceback_format_exception_obj, 3, traceback_f
 //|
 //|     """Prints exception information and stack trace entries.
 //|
-//|     .. note: Setting `chain` will have no effect as chained exceptions are not yet implemented.
+//|     .. note:: Setting ``chain`` will have no effect as chained exceptions are not yet implemented.
 //|
 //|     :param Type[BaseException] etype: This is ignored and inferred from the type of ``value``.
 //|     :param BaseException value: The exception. Must be an instance of `BaseException`.