Fixed typo

Author: Barnabas Sudy

configure

@@ -80,7 +80,7 @@ else
 fi
 
 # configure Apache proxy and auth
-cat /etc/httpd/conf.d/proxy.conf.template | envsubst '$SCHMEA,$HOST,$BACKEND,$MELLON_PATH' > /etc/httpd/conf.d/proxy.conf
+cat /etc/httpd/conf.d/proxy.conf.template | envsubst '$SCHEMA,$HOST,$BACKEND,$MELLON_PATH' > /etc/httpd/conf.d/proxy.conf
 
 
 # Start apache