fixes to formatting, titles etc

karlsoderby · karlsoderby · commit 8c18402b1a6b · 2022-10-10T10:07:21.000+02:00
diff --git a/content/learn/03.programming/10.audio/audio.md b/content/learn/03.programming/10.audio/audio.md
@@ -1,5 +1,5 @@
 ---
-title: "Audio basics with Arduino"
+title: "Audio Basics with Arduino"
 description: "Learn how to create tones and even entire songs using an Arduino."
 source:
   [
@@ -282,7 +282,7 @@ Takes over Timer 1 (16-bit) for the 8000 Hz timer. This breaks PWM (analogWrite(
 
 ### References:
 
-- http://tet.pub.ro/Documente/Proiect%20final/Documentatie/Difuzor/Arduino%20Sound%20%E2%80%93%20Part%201%20%E2%80%93%20uCHobby.pdf
+- [http://tet.pub.ro/](http://tet.pub.ro/Documente/Proiect%20final/Documentatie/Difuzor/Arduino%20Sound%20%E2%80%93%20Part%201%20%E2%80%93%20uCHobby.pdf) (PDF).
 - https://www.evilmadscientist.com/article.php/avrdac
 - https://www.gamedev.net/reference/articles/article442.asp
 
diff --git a/content/learn/05.communication/06.one-wire/one-wire.md b/content/learn/05.communication/06.one-wire/one-wire.md
@@ -7,7 +7,7 @@ author: "Arduino Community"
 
 > This article was revised on 2022/09/28 by Hannes Siebeneicher.
 
-**Controller/peripheral is formerly known as master/slave. Arduino no longer supports the use of this terminology. Devices formerly known as master are referred to as controller and devices formerly known as slaves are referred to as peripheral.**
+***Controller/peripheral is formerly known as master/slave. Arduino no longer supports the use of this terminology. Devices formerly known as master are referred to as controller and devices formerly known as slaves are referred to as peripheral.***
 
 1-Wire communication is a protocol operating through one wire between the controller device and the peripheral device. This article covers the basics of using the 1-Wire protocol with an Arduino with the help of the [OneWire](https://www.arduino.cc/reference/en/libraries/onewire/) library. The following sections provide information about the 1-Wire protocol, interface, power, addressing devices, reading devices and finally a short glimpse into the library's history.
 
