Update moonscript header pattern

site.moon

@@ -1,12 +1,12 @@
 sitegen = require "sitegen"
 tools = require "sitegen.tools"
 site = require "sitegen.site"
-lfs = require "lfs"
-
-date = require "date"
 path = require "sitegen.path"
 -- import slugify from "sitegen.common"
 
+lfs = require "lfs"
+date = require "date"
+
 -- Change output dir to what Openresty prefers
 site.config.out_dir = "html/"
 
@@ -52,7 +52,7 @@ sitegen.create =>
 
   -- replace yaml headers with moonscript headers
   filter "docs", (body) =>
-    body\gsub "%-%-%-.-%.%.%.", (yaml_header) ->
+    body\gsub "^%s*%-%-%-.-%.%.%.", (yaml_header) ->
       moonscript_header = yaml_header\gsub "%-%-%-", "{"
       result = moonscript_header\gsub "%.%.%.", "}"
       result