[PATCH] I2C: fix typo in documentation

Fix a typo in the i2c documentation: the i2c bus scanning tool found in
lm_sensors is called i2cdetect, not i2c_detect.

Signed-off-by: Jean Delvare <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

Documentation/i2c/functionality

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 If you try to access an adapter from a userspace program, you will have
 to use the /dev interface. You will still have to check whether the
 functionality you need is supported, of course. This is done using
-the I2C_FUNCS ioctl. An example, adapted from the lm_sensors i2c_detect
+the I2C_FUNCS ioctl. An example, adapted from the lm_sensors i2cdetect
 program, is below:
 
   int file;