Update AsciiDoc_Template-Single_Entity.adoc

Author: akash73

AsciiDoc_sample/Reference_Terms/AsciiDoc_Template-Single_Entity.adoc

@@ -16,7 +16,7 @@
 --
 
 [float]
-=== Description
+=== #Description#
 // Describe what this Reference term does, and what it is used for	►►►►► THIS SECTION IS MANDATORY ◄◄◄◄◄
 Writes an analog value (http://arduino.cc/en/Tutorial/PWM[PWM wave]) to a pin. Can be used to light a LED at varying brightnesses or drive a motor at various speeds. After a call to `analogWrite()`, the pin will generate a steady square wave of the specified duty cycle until the next call to `analogWrite()` (or a call to `digitalRead()` or `digitalWrite()` on the same pin). The frequency of the PWM signal on most pins is approximately 490 Hz. On the Uno and similar boards, pins 5 and 6 have a frequency of approximately 980 Hz.
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