message: Update doc, ask to use survey.questionTitlePattern instead of survey.questionTitleTemplate
diff: @@ -1014,13 +1014,14 @@ It means you can set a question title as: `"{name}, could you please provide us
  You can control the question numbering. All questions titles show question numbers by default: from 1 to the visible question number in the survey. You can hide question numbers by setting [survey.showQuestionNumbers](https://surveyjs.io/Documentation/Library/?id=surveymodel#showQuestionNumbers) property to `off`, or start the numbering from the beginning on each page, by setting this property to `onPage`.
  -You may use alphabet numbering by setting [survey.questionStartIndex](https://surveyjs.io/Documentation/Library/?id=surveymodel#questionStartIndex) property to `A` or `a`.
  +You may use alphabet numbering by setting [survey.questionStartIndex](https://surveyjs.io/Documentation/Library/?id=surveymodel#questionStartIndex) property to `A.` or `a.`.
  +You can add prefix and change the postfix (default is dot) for this property, for example: `# (1)` or `(A)`.
  ### Question Required Mark
  Use the [survey.requiredText](https://surveyjs.io/Documentation/Library/?id=surveymodel#requiredText) property to change the required symbol. SurveyJS uses the asterisk (`*`) symbol by default. You can change it to another text or make it empty.
  -The default template for the question title is: "{title} {required}". Use the [survey.questionTitleTemplate](https://surveyjs.io/Documentation/Library/?id=surveymodel#questionTitleTemplate) property to change the question title template, for example: `({title} ({required}):`.
  +By default question required mark renders at the end of question title: `2. What is your Name? *`. You can use [survey.questionTitlePattern](https://surveyjs.io/Documentation/Library/?id=surveymodel#questionTitlePatten) to show it at the beginning, set this property to: `requireNumTitle`, or before title: `numRequireTitle` or remove requried text completely from question title to set the property to: `numTitle`.
  > **Example**
  >
  