Update functions_explained.adoc

Author: dadul96

extras/functions_explained.adoc

@@ -1,9 +1,9 @@
 The functions of the library are:
 
-**Servo** -- Class for manipulating servo motors connected to Arduino pins. (max. 6 elements)
+**Servo** -- Class for manipulating servo motors connected to Arduino pins. (**max. 6** elements)
 
-**attach(pin)** -- Attaches a servo motor to an i/o pin. (only pin 2, 3, 7, 8, 44, and 45)
+**attach(pin)** -- Attaches a servo motor to an i/o pin. (only **pin 2, 3, 7, 8, 44,** and **45**)
 
-**writeMicroseconds(us)** -- Sets the servo pulse width in microseconds. (usable range between 500us and 2500us)
+**writeMicroseconds(us)** -- Sets the servo pulse width in microseconds. (usable range between **500**us and **2500**us)
 
-**detach()** -- Clears the used registers and stops the output of the attached pin. (no pin number needed)
+**detach()** -- Clears the used registers and stops the output of the attached pin. (**no pin number!**)