Reorder parameter descriptions to match parameter order (#78)

docs/FreeSWITCH-Explained/Modules/mod-dptools/6586933.mdx

@@ -32,8 +32,8 @@ Click here to expand Table of Contents
 * terminators = digits used to end input if less than <max> digits have been pressed. If it starts with '=', then a terminator must be present for the input to be accepted (Since FS 1.2). (Typically '#', can be empty). Add '+' in front of terminating digit to always append it to the result variable specified in `var_name`.
 * file = Sound file to play to prompt for digits to be dialed by the caller; playback can be interrupted by the first dialed digit (can be empty or the special string "silence" to omit the message).
 * invalid\_file = Sound file to play when digits don't match the regexp (can be empty to omit the message).
-* regexp = Regular expression to match digits (optional, an empty string allows all input (default)).
 * var\_name = Channel variable into which valid digits should be placed (optional, no variable is set by default. See also 'var\_name\_invalid' below).
+* regexp = Regular expression to match digits (optional, an empty string allows all input (default)).
 * digit\_timeout = Inter-digit timeout; number of milliseconds allowed between digits in lieu of dialing a terminator digit; once this number is reached, PAGD assumes that the caller has no more digits to dial (optional, defaults to the value of <timeout>).
 * transfer\_on\_failure = where to transfer call when max tries has been reached, example: "1 XML hangup" (optional, by default no transfer is executed, allowing the caller to process channel variables).