doc: fix Arduino 101 documentation formatting issues

Fix a few small (mainly rendering) issues with the arduino_101.rst
document:
- A few paragraphs had the wrong indentation
- A sub-list did not appear as such (serial port settings)
- Remove the 'Bibliography' section which appears empty
- Fix IO-3 and IO-5 pin names in note

Change-Id: I60ad839de1901167b6793254186836015502aaab
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>

doc/board/arduino_101.rst

@@ -127,10 +127,11 @@ Once connected, on your development environment, you will need to:
   :file:`/dev/ttyUSB0`
 
 * Set the communication details to:
-  ** Speed: 115200
-  ** Data: 8 bits
-  ** Parity: None
-  ** Stopbits: 1
+
+  * Speed: 115200
+  * Data: 8 bits
+  * Parity: None
+  * Stopbits: 1
 
 
 Building an Application
@@ -596,7 +597,7 @@ be found in the :file:`boards/arduino_101/pinmux.c`.
 +-------------+----------+------------+
 
 .. note::
-  IO3 and IO5 require both pins to be set for functionality changes.
+   IO-3 and IO-5 require both pins to be set for functionality changes.
 
 Release Notes
 *************
@@ -605,9 +606,6 @@ When debugging on ARC, it is important that the x86 core be started and
 running BEFORE attempting to debug on ARC. This is because the IPM console
 calls will hang waiting for the x86 core to clear the communication.
 
-Bibliography
-************
-
 .. _Arduino Website: https://www.arduino.cc/en/Main/ArduinoBoard101
 
 .. _schematics: https://www.arduino.cc/en/uploads/Main/Arduino101Schematic.pdf