Clocks.md

@@ -11,7 +11,7 @@ But wait, what exactly _is_ the input clock? Where does it come from? Were can I
 ## Internal Buses: AHB, APBx, WTF?
 
 STM32 microcontrollers are equipped with multiple buses for internal communication.
-These buses are part of the **AMBA** (Advanced Microcontroller Bus Architecture) standard provided by ARM. Here is a general diagram of the buses:
+These buses are part of the **AMBA** (_Advanced Microcontroller Bus Architecture_) standard provided by ARM. Here is a general diagram of the buses:
 
 <div align="center"><img src="images/clocks/amba-bus.png" /><br/><i>Typical bus hierarchy for STM32F4xx</i></div>
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