wifi: ath10k: fix htt_q_state_conf & htt_q_state kernel-doc

Currently kernel-doc reports:
drivers/net/wireless/ath/ath10k/htt.h:1488: warning: cannot understand function prototype: 'struct htt_q_state_conf '
drivers/net/wireless/ath/ath10k/htt.h:1542: warning: cannot understand function prototype: 'struct htt_q_state '

Update the kernel-doc for these two structs to resolve the warnings.

No functional changes, compile tested only.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240118-ath10k-kerneldoc-v1-3-99c7e8d95aad@quicinc.com