corrected typo (#882)

Co-authored-by: holly1238 <77758406+holly1238@users.noreply.github.com>

Author: Tanmay06

advanced_source/super_resolution_with_onnxruntime.py

@@ -145,7 +145,7 @@ def _initialize_weights(self):
                   do_constant_folding=True,  # whether to execute constant folding for optimization
                   input_names = ['input'],   # the model's input names
                   output_names = ['output'], # the model's output names
-                  dynamic_axes={'input' : {0 : 'batch_size'},    # variable lenght axes
+                  dynamic_axes={'input' : {0 : 'batch_size'},    # variable length axes
                                 'output' : {0 : 'batch_size'}})
 
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