Ensure public exists for search index

Closes #756

components/site/src/lib.rs

@@ -764,6 +764,7 @@ impl Site {
     }
 
     pub fn build_search_index(&self) -> Result<()> {
+        ensure_directory_exists(&self.output_path)?;
         // index first
         create_file(
             &self.output_path.join(&format!("search_index.{}.js", self.config.default_language)),

docs/config.toml

@@ -7,7 +7,6 @@ highlight_code = true
 insert_anchor_links = true
 highlight_theme = "kronuz"
 build_search_index = true
-# check_external_links = true
 
 [extra]
 author = "Vincent Prouillet"