Typo correction in lazy_logging.md

Typo correction in lazy_logging.md (sum_lazzy.py -> sum_lazy.py )

docs/lazy_logging.md

@@ -56,7 +56,7 @@ line_plot = tw.Visualizer(stream, vis_type='line')
 line_plot.show()
 ```
 
-Now when you run our script `sum_lazzy.py` in the console and then above Jupyter Notebook, you will see the sum of `weights` array getting plotted in real-time:
+Now when you run our script `sum_lazy.py` in the console and then above Jupyter Notebook, you will see the sum of `weights` array getting plotted in real-time:
 
 <img src="images/lazy_log_array_sum.png" width="400">
 
@@ -70,4 +70,4 @@ We have just scratched the surface in this new land of lazy logging! You can do
 
 ## Questions?
 
-File a [Github issue](https://github.com/microsoft/tensorwatch/issues/new) and let us know if we can improve this tutorial.
+File a [Github issue](https://github.com/microsoft/tensorwatch/issues/new) and let us know if we can improve this tutorial.