Changes:

- reformatted some array
- added missing documentation
- added type-hints
- changed double-quotes to single

src/Module/Install.php

@@ -363,7 +363,7 @@ class Install extends BaseModule
 	 * @return string The text for the next steps
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private function whatNext()
+	private function whatNext(): string
 	{
 		$baseurl = $this->baseUrl->get();
 		return
@@ -383,6 +383,7 @@ class Install extends BaseModule
 	 * @param string                                   $cat         The category of the setting
 	 * @param string                                   $key         The key of the setting
 	 * @param null|string                              $default     The default value
+	 * @return void
 	 */
 	private function checkSetting(Cache $configCache, array $post, string $cat, string $key, ?string $default = null)
 	{