Update contact_mailer_spec.rb
Update contact_mailer_spec.rb

Updates the rspec declaration for spec/mailers/contact_mailer_spec.rb to
use naming convention and directory location instead of the type:
parameter to denote spec type: mailer.

CollegeSTAR/collegestar_org,CollegeSTAR/collegestar_org,CollegeSTAR/collegestar_org