gnrc_icmpv6_error: fix doc alignment

sys/include/net/gnrc/icmpv6/error.h

@@ -37,7 +37,7 @@ extern "C" {
 /**
  * @brief   Sends an ICMPv6 destination unreachable message for sending.
  *
- * @pre @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
+ * @pre     @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
  *
  * @note    Won't send if source address of @p orig_pkt is unspecified or
  *          multicast
@@ -50,7 +50,7 @@ void gnrc_icmpv6_error_dst_unr_send(uint8_t code, const gnrc_pktsnip_t *orig_pkt
 /**
  * @brief   Sends an ICMPv6 packet too big message for sending.
  *
- * @pre @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
+ * @pre     @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
  *
  * @note    Won't send if source address of @p orig_pkt is unspecified or
  *          multicast
@@ -64,7 +64,7 @@ void gnrc_icmpv6_error_pkt_too_big_send(uint32_t mtu,
 /**
  * @brief   Sends an ICMPv6 time exceeded message for sending.
  *
- * @pre @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
+ * @pre     @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
  *
  * @note    Won't send if source address of @p orig_pkt is unspecified or
  *          multicast
@@ -78,8 +78,8 @@ void gnrc_icmpv6_error_time_exc_send(uint8_t code,
 /**
  * @brief   Sends an ICMPv6 parameter problem message for sending.
  *
- * @pre @p orig_pkt is in receive order.
- * @pre @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
+ * @pre     @p orig_pkt is in receive order.
+ * @pre     @p orig_pkt contains a packet snip of type @ref GNRC_NETTYPE_IPV6
  *
  * @note    Won't send if source address of @p orig_pkt is unspecified or
  *          multicast