[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 <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>