revert example piiodevice

doc/examples/piiodevice.cpp

@@ -26,17 +26,23 @@ void _() {
 	};
 	REGISTER_DEVICE(SomeIO)
 	//! [0]
+
+	// clang-format off
+
 	//! [configure]
 	// file example.conf
-	dev.reopenEnabled = false dev.device = / dev / ttyS0 dev.speed = 9600
-		// end example.conf
-	    // code
-		PISerial ser;
+	dev.reopenEnabled = false
+	dev.device = /dev/ttyS0
+	dev.speed = 9600
+	// end example.conf
+	// code
+	PISerial ser;
 	ser.configure("example.conf", "dev");
 	//! [configure]
 	//! [configureDevice]
 	class SomeIO: public PIIODevice {
-		... bool configureDevice(const void * e_main, const void * e_parent) override {
+		...
+		bool configureDevice(const void * e_main, const void * e_parent) override {
 			PIConfig::Entry * em = (PIConfig::Entry *)e_main;
 			PIConfig::Entry * ep = (PIConfig::Entry *)e_parent;
 			setStringParam(readDeviceSetting<PIString>("stringParam", stringParam(), em, ep));
@@ -46,4 +52,6 @@ void _() {
 		...
 	};
 	//! [configureDevice]
+
+	// clang-format on
 };