rpc: update inline comments to refer to new file paths

qa/rpc-tests/blockchain.py

@@ -5,7 +5,7 @@
 
 #
 # Test RPC calls related to blockchain state. Tests correspond to code in
-# rpcblockchain.cpp.
+# rpc/blockchain.cpp.
 #
 
 from decimal import Decimal

src/wallet/rpcwallet.cpp

@@ -992,7 +992,7 @@ UniValue sendmany(const UniValue& params, bool fHelp)
     return wtx.GetHash().GetHex();
 }
 
-// Defined in rpcmisc.cpp
+// Defined in rpc/misc.cpp
 extern CScript _createmultisig_redeemScript(const UniValue& params);
 
 UniValue addmultisigaddress(const UniValue& params, bool fHelp)