qcacmn: Fix misspellings of "whether"

The following change introduced misspellings of "whether", so fix
them.
- Change-Id I50b747710eb3c49eab60c81bbc61e75e2f8650ed
  qcacmn: Handling of IGMP packets in MLO Multipass

Change-Id: I09891388e45a210457d46fb3528efdd5a32905dd
CRs-Fixed: 3319323

qdf/linux/src/qdf_nbuf.c

@@ -1874,7 +1874,7 @@ bool __qdf_nbuf_is_ipv4_wapi_pkt(struct sk_buff *skb)
 qdf_export_symbol(__qdf_nbuf_is_ipv4_wapi_pkt);
 
 /**
- * qdf_nbuf_is_ipv6_vlan_pkt() - check wheather packet is vlan IPV6
+ * qdf_nbuf_is_ipv6_vlan_pkt() - check whether packet is vlan IPV6
  * @data: Pointer to network data buffer
  *
  * This api is for vlan header included ipv6 packet.
@@ -1899,7 +1899,7 @@ static bool qdf_nbuf_is_ipv6_vlan_pkt(uint8_t *data)
 }
 
 /**
- * qdf_nbuf_is_ipv4_vlan_pkt() - check wheather packet is vlan IPV4
+ * qdf_nbuf_is_ipv4_vlan_pkt() - check whether packet is vlan IPV4
  * @data: Pointer to network data buffer
  *
  * This api is for vlan header included ipv4 packet.