* Set SN74HC165's clock_inhibit_pin as optional
The use of only 3 pins is mentioned, but the configuration values don't reflect that.
Datasheet specifies the pin can be directly connected to ground. The code already expects the pin to not be used: ec3162282c/esphome/components/sn74hc165/__init__.py (L35)
* Update sn74hc165.rst
* Update sn74hc165.rst
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Co-authored-by: H. Árkosi Róbert <robreg@zsurob.hu>