[docs] remove empty lines (#12049)

src/core/border_router/rx_ra_tracker.hpp

@@ -188,7 +188,6 @@ public:
      *
      * @param[in] aCallback   The callback function pointer. Can be `nullptr` if no callback is required.
      * @param[in] aConext     An arbitrary context information (used when invoking the callback).
-     *
      */
     void SetRdnssAddrCallback(RdnssAddrCallback aCallback, void *aContext) { mRdnssCallback.Set(aCallback, aContext); }
 

src/core/config/misc.h

@@ -120,7 +120,6 @@
  *
  * On FTD/MTD builds this feature is now mandatory and MUST be enabled. This config is therefore only applicable for
  * RADIO/RCP builds.
- *
  */
 #ifndef OPENTHREAD_CONFIG_UPTIME_ENABLE
 #define OPENTHREAD_CONFIG_UPTIME_ENABLE (OPENTHREAD_FTD || OPENTHREAD_MTD)

src/core/mac/sub_mac_csl_receiver.cpp

@@ -234,7 +234,6 @@ void SubMac::GetCslWindowEdges(uint32_t &aAhead, uint32_t &aAfter)
      *    |           |            |           |           |            |            |                        |
      * ---|-----------|------------|-----------|-----------|------------|------------|----------//------------|---
      * -timeAhead                           CslPhase                             +timeAfter             -timeAhead
-     *
      */
     uint32_t semiPeriod = mCslPeriod * kUsPerTenSymbols / 2;
     uint32_t curTime, elapsed, semiWindow;

src/core/net/dns_types.hpp

@@ -1722,7 +1722,6 @@ public:
      * @retval kErrorNone     The (translated) record data was successfully appended to @p aMessage.
      * @retval kErrorNoBufs   Failed to allocate new buffers.
      * @retval kErrorParse    The given @p aData format is not valid.
-     *
      */
     static Error AppendTranslatedRecordDataTo(Message                       &aMessage,
                                               uint16_t                       aRecordType,

src/core/thread/mle.hpp

@@ -1042,7 +1042,6 @@ public:
      * Schedule tx of MLE Advertisement message (unicast) to the given neighboring router after a random delay.
      *
      * @param[in] aRouter  The router to send the Advertisement to.
-     *
      */
     void ScheduleUnicastAdvertisementTo(const Router &aRouter);
 

src/posix/platform/resolver.hpp

@@ -123,7 +123,6 @@ public:
      *
      * @param[in] aRecursiveDnsServers A pointer to the list of IPv6 recursive DNS server addresses.
      * @param[in] aNumServers          The number of recursive DNS servers.
-     *
      */
     void SetRecursiveDnsServerList(const otIp6Address *aRecursiveDnsServers, uint32_t aNumServers);