fix: Passed description down the context chain.

render.odin

@@ -25,6 +25,7 @@ Base_Data :: struct {
 	params:      json.Value,
 	body:        string,
 	title:       string,
+	description: string,
 	og:          Open_Graph,
 }
 
@@ -150,6 +151,7 @@ render_site :: proc(site: ^Site) {
 		now         = now,
 		author      = site.author,
 		params      = site.params,
+		description = site.description,
 		og          = site.og,
 	}