Fix typo in gettransaction help

src/rpcwallet.cpp

@@ -1518,7 +1518,7 @@ Value gettransaction(const Array& params, bool fHelp)
             "  \"hex\" : \"data\"         (string) Raw data for transaction\n"
             "}\n"
 
-            "\nbExamples\n"
+            "\nExamples:\n"
             + HelpExampleCli("gettransaction", "\"1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d\"")
             + HelpExampleRpc("gettransaction", "\"1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d\"")
         );