fix typo in multi_index

contracts/eosiolib/multi_index.hpp

@@ -619,8 +619,8 @@ class multi_index
 
       template<typename Lambda>
       const_iterator emplace( uint64_t payer, Lambda&& constructor ) {
-         eosio_assert( _code == current_receiver(), "cannot modify objects in table of another contract" ); // Quick fix for mutating db using multi_index that shouldn't allow mutation. Real fix can come in RC2.
-         
+         eosio_assert( _code == current_receiver(), "cannot create objects in table of another contract" ); // Quick fix for mutating db using multi_index that shouldn't allow mutation. Real fix can come in RC2.
+
          auto itm = std::make_unique<item>( this, [&]( auto& i ){
             T& obj = static_cast<T&>(i);
             constructor( obj );