Squash warnings about non-static methods in the page renderer

Changelog.md

@@ -2,6 +2,11 @@
 This file holds the changelog for Pepperminty Wiki. This is the master list of things that have changed (second only to the commit history!) - though the information for any particular release can also be found in the description of it's page for every release made on GitHub too.
 
 
+## v0.19.3-hotfix3
+
+### Fixed
+
+
 ## v0.19.2-hotfix2
  - Patched another crazy bug in the extra data system in the downloader
 

core/40-page-renderer.php

@@ -342,7 +342,7 @@ class page_renderer
 	 * @package core
 	 * @param string $scriptUrl The url of the javascript file to reference.
 	 */
-	public function add_js_link(string $scriptUrl) {
+	public static function add_js_link(string $scriptUrl) {
 		static::$jsLinks[] = $scriptUrl;
 	}
 	/**
@@ -350,7 +350,7 @@ class page_renderer
 	 * @package core
 	 * @param string $script The snippet of javascript to add.
 	 */
-	public function add_js_snippet(string $script) {
+	public static function add_js_snippet(string $script) {
 		static::$jsSnippets[] = $script;
 	}
 	/**