docs: i2c: smbus-protocol: fix link syntax
Use the proper ReST syntax to generate a valid hyperlink. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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@ -27,8 +27,8 @@ a different protocol operation entirely.
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Each transaction type corresponds to a functionality flag. Before calling a
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transaction function, a device driver should always check (just once) for
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the corresponding functionality flag to ensure that the underlying I2C
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adapter supports the transaction in question. See
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<file:Documentation/i2c/functionality.rst> for the details.
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adapter supports the transaction in question. See :doc:`functionality` for
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the details.
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Key to symbols
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