Added missing bbdoc about statements

blitz.mod/blitz.bmx

@@ -388,6 +388,7 @@ Function Delay( millis:Int )="bbDelay"
 
 Rem
 bbdoc: Wait for a given number of microseconds
+about:
 #UDelay suspends program execution for at least @microcseconds.<br>
 <br>
 A microsecond is one millionth of a second.

maxunit.mod/maxunit.bmx

@@ -586,6 +586,7 @@ Type TAssert
 	
 	Rem
 	bbdoc: Asserts that an #Object is #Null.
+	about:
 	If it is not #Null, an #AssertionFailedException is thrown with the given message.
 	End Rem
 	Function assertNull(obj:Object, message:String = Null)
@@ -607,6 +608,7 @@ Type TAssert
 
 	Rem
 	bbdoc: Asserts that an pointer is #Null.
+	about:
 	If it is not #Null, an #AssertionFailedException is thrown with the given message.
 	End Rem
 	Function assertNull(value:Byte Ptr, message:String = Null)