Updated Raw HID docs to clarify packet/report length (#11211)

Co-authored-by: Ryan <fauxpark@gmail.com>

docs/feature_rawhid.md

@@ -29,7 +29,7 @@ void raw_hid_receive(uint8_t *data, uint8_t length) {
 }
 ```
 
-`raw_hid_receive` can receive variable size packets from host with maximum length `RAW_EPSIZE`. `raw_hid_send` on the other hand can send packets to host of exactly `RAW_EPSIZE` length, therefore it should be used with data of length `RAW_EPSIZE`.
+These two functions send and receive packets of length `RAW_EPSIZE` bytes to and from the host (32 on LUFA/ChibiOS/V-USB, 64 on ATSAM).
 
 Make sure to flash raw enabled firmware before proceeding with working on the host side.