FIX: Update transformer_tutorial.rst (#2949)

Author: loganthomas

Diff for: beginner_source/transformer_tutorial.rst

@@ -1,7 +1,8 @@
 Language Modeling with ``nn.Transformer`` and torchtext
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+=======================================================
 
 The content is deprecated.
 
 .. raw:: html
-   <meta http-equiv="refresh" content="0; url=https://pytorch.org/tutorials/">
+
+   <meta http-equiv="Refresh" content="1; url='https://pytorch.org/tutorials/'" />