Typo in sparse URL

Author: k3d3

templates/index.html

@@ -29,7 +29,7 @@
 [source.panamax]
 registry = "{{ host }}/git/crates.io-index"
 [source.panamax-sparse]
-registry = "{{ host }}/index/"
+registry = "sparse+{{ host }}/index/"
 
 [source.crates-io]
 # To use sparse index, change "panamax" to "panamax-sparse".