fix curl path

software/autocert/software.cfg

@@ -57,7 +57,7 @@ context =
     key buildout_egg_directory buildout:eggs-directory
     key buildout_develop_directory buildout:develop-eggs-directory
     key buildout_directory buildout:directory
-    key curl_location bash:location
+    key curl_location curl:location
     key dehydrated_location dehydrated:location
     key kedifa_location kedifa:location
     key openssl_location openssl:location