config: Rename urls to url

config.go

@@ -38,7 +38,7 @@ func (c *Config) Load(path string) error {
 			switch key {
 			case "title":
 				c.Title = value
-			case "urls":
+			case "url":
 				c.URLs = strings.Fields(value)
 			}
 		case "feeds":

doc/kiln.1.scd

@@ -161,8 +161,8 @@ The following keys are supported:
 :[ *Description*
 |  title
 :  Site title
-|  urls
-:  A list of site URLs separated by whitespace.
+|  url
+:  One or more site URLs separated by whitespace.
 
 Site URLs are used when generating Atom feeds.
 Site URLs may contain paths, but should not end with a trailing slash.

example/config.ini

@@ -1,5 +1,5 @@
 title=Example Site
-urls=gemini://example.com https://example.com
+url=gemini://example.com https://example.com
 
 [feeds]
 /blog/=Example Feed