Update profiler.md (apache#15477)

Add one line "dump all results to log file before download" to the main example. Otherwise, it is likely that a user may download partially-written and broken files.
anirudhacharya · Aug 20, 2019 · 7df769b · 7df769b
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commit 7df769b
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diff --git a/docs/tutorials/python/profiler.md b/docs/tutorials/python/profiler.md
@@ -154,6 +154,8 @@ run_training_iteration(*next(itr))
 mx.nd.waitall()
 # Ask the profiler to stop recording
 profiler.set_state('stop')
+# Dump all results to log file before download
+profiler.dump()
 ```
 
 Between running and stopping the profiler, you can also pause and resume the profiler using `profiler.pause()` and `profiler.resume()` respectively to profile only parts of the code you want to profile.