Incorrect Qwiic Quad Relay Firmware Comments

[dlkeng]

In the file "Qwiic_Quad_Relay_Firmware.ino", there are a couple of comments that are not correct:

1. Line 2 states that this code is for "An I2C based KeyPad" when in reality, it's for the "Qwiic Quad Relay"
2. Lines 206 to 208 state

"If you request the state of three relays, starting with four, you'll get four(0x08), one(0x05), two(0x06)"

when in reality, the code only returns the state of relay four followed by 2 bytes of 0xff indicating invalid relay items. It does not wrap back to the first relay since there is only one requestEvent() occurring for the multiple bytes requested. However, any subsequent follow-on requests will start from relay one.