Fixed typo under Proj.4 install
Fixed typo under Proj.4 install

ywarezk/heroku-buildpack-geodjango,ephemerallabs/heroku-buildpack-python,mjumbewu/heroku-buildpack-python-no-node,minichate/heroku-buildpack-ldap,cirlabs/heroku-buildpack-geodjango,minichate/heroku-buildpack-ldap,cirlabs/heroku-buildpack-geodjango,TipWander/heroku-buildpack-geodjango,mjumbewu/heroku-buildpack-python-no-node,mjumbewu/heroku-buildpack-python-no-node,resmio/heroku-buildpack-geodjango,dulaccc/heroku-buildpack-geodjango,cirlabs/heroku-buildpack-geodjango,nwkotto/geodjango-buildpack-with-geos