Fixed documentation for stereo phasor (#86)

* corrected documentation for stereo phasor

* fixed input type

phaflangers.lib

@@ -151,13 +151,12 @@ with {               // depth=0 => direct-signal only
 // #### Phaser
 //
 // ```
-// _ : phaser2_stereo(Notches,phase,width,frqmin,fratio,frqmax,speed,depth,fb,invert) : _
+// _,_ : phaser2_stereo(Notches,width,frqmin,fratio,frqmax,speed,depth,fb,invert) : _,_
 // ```
 //
 // Where:
 //
 // * `Notches`: number of spectral notches (MACRO ARGUMENT - not a signal)
-// * `phase`: phase of the oscillator (0-1)
 // * `width`: approximate width of spectral notches in Hz
 // * `frqmin`: approximate minimum frequency of first spectral notch in Hz
 // * `fratio`: ratio of adjacent notch frequencies