Update app-certification.markdown
Update app-certification.markdown

Fixed heading levels and punctuation on bullets. Ready.
HeathH-Concur/developer.concur.com,cskelley/developer.concur.com,sarraloew/developer.concur.com,HeathH-Concur/developer.concur.com,concur/developer.concur.com,bhague1281/developer.concur.com,bhague1281/developer.concur.com,concur/developer.concur.com,bhague1281/developer.concur.com,concur/developer.concur.com,sarraloew/developer.concur.com,sarraloew/developer.concur.com,concur/developer.concur.com,cskelley/developer.concur.com,cskelley/developer.concur.com,cskelley/developer.concur.com,cskelley/developer.concur.com,bhague1281/developer.concur.com,bhague1281/developer.concur.com,HeathH-Concur/developer.concur.com,sarraloew/developer.concur.com,sarraloew/developer.concur.com,concur/developer.concur.com,HeathH-Concur/developer.concur.com,cskelley/developer.concur.com,HeathH-Concur/developer.concur.com