Wrong date in Employer letter for visa interivew

Dear Sir/Madam ,

Tomorrow i have  visa interivew . I  realized that  , in the employment letter the joining date was mentioned 28 oct 2011 in place of 2013. 

   I am totally panic, what to do next .

  Kindly suggest me whether i can carry the employer letter  by correcting the year ,by applying whitener and edit it by self . 

   I would like to tell to consulate that  it was typo mistake by employer so he has corrected the year. 

  Kindly let me know your suggestion . Please replay my ASAP .