Update initializers.py

Author: zsdonghao

tensorlayer/initializers.py

@@ -194,7 +194,7 @@ def deconv2d_bilinear_upsampling_initializer(shape):
 
     Examples
     --------
-    - Upsampling by a factor of 2, ie e.g 100->200
+    Upsampling by a factor of 2, ie e.g 100->200
     >>> import tensorflow as tf
     >>> import tensorlayer as tl
     >>> rescale_factor = 2