Merge pull request #293 from arduino/fix-I2C-article

remove acronym for clarity

Author: Renat0Ribeir0

content/Hardware Support/Generic/I2C-and-pull-up-resistors.md

@@ -3,11 +3,9 @@ title: "I2C and pull-up resistors"
 id: 4402394268562
 ---
 
-For effective data transmission with the Inter-Integrated Circuit (I2C) protocol using Arduino, it's often necessary to use external pull-up resistors on the designated I2C pins. Most Arduino boards don't have pre-installed pull-up resistors on these pins, but instead they offer exposed pads for surface mount resistors ("SMD"). This gives more flexibity on how these pins can be used. More specifically:
+For effective data transmission with the Inter-Integrated Circuit (I2C) protocol using Arduino, it's often necessary to use external pull-up resistors on the designated I2C pins. Most Arduino boards don't have pre-installed pull-up resistors on these pins, but instead they offer exposed pads for surface mount resistors. This gives more flexibity on how these pins can be used. More specifically:
 
 * The I2C designated pins can also be used as General Purpose Input/Output (GPIO) pins or for Analog-to-Digital Conversion (ADC). In this modes, pull-up resistors are not typically required.
-* Users are not bound to use I2C with pre-set pull-up values. This is important because the optimal pull-up value can vary depending on different factors.
-
-   <a class="link-external" href="https://learn.sparkfun.com/tutorials/i2c/i2c-at-the-hardware-level">Read more about I2C and pull-up values</a>
+* Users are not bound to use I2C with pre-set pull-up values. This is important because the optimal pull-up value can vary depending on different factors. <a class="link-external" href="https://learn.sparkfun.com/tutorials/i2c/i2c-at-the-hardware-level">Read more about I2C and pull-up values</a>
 
 Therefore, when setting up I2C communication it is important to refer to the specifications and device datasheets for understanding the ideal pull-up value requirements.