Add remark-code-title to list of plugins

Closes GH-106.

Reviewed-by: Remco Haszing <remcohaszing@gmail.com>
Reviewed-by: Christian Murphy <christian.murphy.42@gmail.com>
Reviewed-by: Titus Wormer <tituswormer@gmail.com>

Author: kevinzunigacuellar

doc/plugins.md

@@ -298,6 +298,8 @@ The list of plugins:
     — new syntax for wiki links (rehype compatible)
 *   🟢 [`remark-yaml-config`](https://github.com/remarkjs/remark-yaml-config)
     — configure remark w/ YAML
+*   🟢 [`remark-code-title`](https://github.com/kevinzunigacuellar/remark-code-title)
+    — add titles to code blocks
 
 ## List of presets