Move the remark to the standard Notes and Warnings section

Author: rohoog

Language/Functions/Communication/Serial/ifSerial.adoc

@@ -37,10 +37,6 @@ None
 Returns true if the specified serial port is available. This will only return false if querying the Leonardo's USB CDC serial connection before it is ready. Data type: `bool`.
 
 
-[float]
-=== Warning
-This function adds a delay of 10ms in an attempt to solve "open but not quite" situations. Don't use it in tight loops.
-
 --
 // OVERVIEW SECTION ENDS
 
@@ -71,5 +67,9 @@ void loop() {
 }
 ----
 
+[float]
+=== Notes and Warnings
+This function adds a delay of 10ms in an attempt to solve "open but not quite" situations. Don't use it in tight loops.
+
 --
 // HOW TO USE SECTION ENDS