Fix versions badge image url.

Author: daspecster

speech/README.rst

@@ -44,5 +44,5 @@ connect to the Google Cloud Speech API using this Client Library.
 .. _speech documentation: https://googlecloudplatform.github.io/google-cloud-python/stable/speech-usage.html
 .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-speech.svg
    :target: https://pypi.python.org/pypi/google-cloud-speech
-.. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-bspeech.svg
+.. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-speech.svg
    :target: https://pypi.python.org/pypi/google-cloud-speech