Trivial: fixup a few doxygen comments

These were not declared properly, so their results are not properly
processed. E.g.:
https://dev.visucore.com/bitcoin/doxygen/rpcdump_8cpp.html#a994c8748aaa60fbb78009ff8a0638dea
https://dev.visucore.com/bitcoin/doxygen/coins_8cpp.html#aa03af24ef3570144b045f4fca7a0d603
https://dev.visucore.com/bitcoin/doxygen/wallet_2wallet_8cpp.html#a5c2a7725ff8796f03471f844ecded3d9

src/coins.h

@@ -298,17 +298,17 @@ private:
 };
 
 //! Utility function to add all of a transaction's outputs to a cache.
-// When check is false, this assumes that overwrites are only possible for coinbase transactions.
-// When check is true, the underlying view may be queried to determine whether an addition is
-// an overwrite.
+//! When check is false, this assumes that overwrites are only possible for coinbase transactions.
+//! When check is true, the underlying view may be queried to determine whether an addition is
+//! an overwrite.
 // TODO: pass in a boolean to limit these possible overwrites to known
 // (pre-BIP34) cases.
 void AddCoins(CCoinsViewCache& cache, const CTransaction& tx, int nHeight, bool check = false);
 
 //! Utility function to find any unspent output with a given txid.
-// This function can be quite expensive because in the event of a transaction
-// which is not found in the cache, it can cause up to MAX_OUTPUTS_PER_BLOCK
-// lookups to database, so it should be used with care.
+//! This function can be quite expensive because in the event of a transaction
+//! which is not found in the cache, it can cause up to MAX_OUTPUTS_PER_BLOCK
+//! lookups to database, so it should be used with care.
 const Coin& AccessByTxid(const CCoinsViewCache& cache, const uint256& txid);
 
 #endif // BITCOIN_COINS_H

src/net.h

@@ -273,17 +273,17 @@ public:
     void SetMaxOutboundTimeframe(uint64_t timeframe);
     uint64_t GetMaxOutboundTimeframe();
 
-    //!check if the outbound target is reached
-    // if param historicalBlockServingLimit is set true, the function will
-    // response true if the limit for serving historical blocks has been reached
+    //! check if the outbound target is reached
+    //! if param historicalBlockServingLimit is set true, the function will
+    //! response true if the limit for serving historical blocks has been reached
     bool OutboundTargetReached(bool historicalBlockServingLimit);
 
-    //!response the bytes left in the current max outbound cycle
-    // in case of no limit, it will always response 0
+    //! response the bytes left in the current max outbound cycle
+    //! in case of no limit, it will always response 0
     uint64_t GetOutboundTargetBytesLeft();
 
-    //!response the time in second left in the current max outbound cycle
-    // in case of no limit, it will always response 0
+    //! response the time in second left in the current max outbound cycle
+    //! in case of no limit, it will always response 0
     uint64_t GetMaxOutboundTimeLeftInCycle();
 
     uint64_t GetTotalBytesRecv();

src/wallet/rpcdump.cpp

@@ -849,9 +849,9 @@ struct ImportData
 
 enum class ScriptContext
 {
-    TOP, //! Top-level scriptPubKey
-    P2SH, //! P2SH redeemScript
-    WITNESS_V0, //! P2WSH witnessScript
+    TOP, //!< Top-level scriptPubKey
+    P2SH, //!< P2SH redeemScript
+    WITNESS_V0, //!< P2WSH witnessScript
 };
 
 // Analyse the provided scriptPubKey, determining which keys and which redeem scripts from the ImportData struct are needed to spend it, and mark them as used.

src/wallet/wallet.h

@@ -35,8 +35,8 @@
 #include <vector>
 
 //! Responsible for reading and validating the -wallet arguments and verifying the wallet database.
-//  This function will perform salvage on the wallet if requested, as long as only one wallet is
-//  being loaded (WalletParameterInteraction forbids -salvagewallet, -zapwallettxes or -upgradewallet with multiwallet).
+//! This function will perform salvage on the wallet if requested, as long as only one wallet is
+//! being loaded (WalletParameterInteraction forbids -salvagewallet, -zapwallettxes or -upgradewallet with multiwallet).
 bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files);
 
 //! Load wallet databases.
@@ -55,10 +55,10 @@ void StopWallets();
 void UnloadWallets();
 
 //! Explicitly unload and delete the wallet.
-//  Blocks the current thread after signaling the unload intent so that all
-//  wallet clients release the wallet.
-//  Note that, when blocking is not required, the wallet is implicitly unloaded
-//  by the shared pointer deleter.
+//! Blocks the current thread after signaling the unload intent so that all
+//! wallet clients release the wallet.
+//! Note that, when blocking is not required, the wallet is implicitly unloaded
+//! by the shared pointer deleter.
 void UnloadWallet(std::shared_ptr<CWallet>&& wallet);
 
 bool AddWallet(const std::shared_ptr<CWallet>& wallet);
@@ -588,8 +588,8 @@ public:
     int64_t nTimeCreated;
     int64_t nTimeExpires;
     std::string strComment;
-    //! todo: add something to note what created it (user, getnewaddress, change)
-    //!   maybe should have a map<string, string> property map
+    // todo: add something to note what created it (user, getnewaddress, change)
+    //   maybe should have a map<string, string> property map
 
     explicit CWalletKey(int64_t nExpires=0);