Fix issue #145: Correct error message and update modifiersAndConstructors_answer.sol#148

Code-Donewell wants to merge 1 commit intoremix-project-org:masterremix-project-org/remix-workshops:masterfrom

Code-Donewell:fix/issue-145-error-messageCode-Donewell/remix-workshops:fix/issue-145-error-messageCopy head branch name to clipboard