Minor fixes to debugger_v2 guide. (#5005)
Minor fixes to debugger_v2 guide. (#5005)

Minor fixes to the debugger_v2 guide, including:

* Use consistent code markers for certain symbols.
* Update references to "logits" input to a "probs" input, to match the screenshots and what appears in reality.
tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard