Add missing plt.show() statement to Beginner/DCGAN Face Tutorial

[Soooda]

Description

I was following the instructions in the tutorial to set up the dataset loader and visualise its outputs according to the code block:

plt.figure(figsize=(8,8))
plt.axis("off")
plt.title("Training Images")
plt.imshow(np.transpose(vutils.make_grid(real_batch[0].to(device)[:64], padding=2, normalize=True).cpu(),(1,2,0)))

It configures the plt graphing options but misses the final plt.show() command to open GUI. I ran the code above and nothing happened.

Checklist

• The issue that is being fixed is referred in the description (see above "Fixes #ISSUE_NUMBER")
• Only one issue is addressed in this pull request
• Labels from the issue that this PR is fixing are added to this pull request
• No unnecessary issues are included into this pull request.

cc @suraj813

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/tutorials/2728

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As of commit 0ca397c with merge base 9654fcc ():
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[svekars]

Actually, let's just add it.