Update 'Shape-to-geotiff.md'

Shape-to-geotiff.md

@@ -29,11 +29,13 @@ There are some optional task attribute input parameters for greater flexibility.
 
 * **inputLayers**  
  * array of of input layer name strings
+ * Default is processing all layers
 * **algorithm**  
  * Valid inputs can be found here https://gdal.org/programs/gdal_grid.html#interpolation-algorithms
  * Example of the default **"invdistnn:radius=100:min_points=2"**
 * **resolution**
  * The resolution in meters for the final tiff file. [1, 100]
+ * Default is 1
 
 defaults are false