spelling: encouraged

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

src/Core/Installer.php

@@ -591,7 +591,7 @@ class Installer
 	 *
 	 * Tries to determine whether the connection to the server is secured
 	 * by TLS or not. If not the user will be warned that it is higly
-	 * encuraged to use TLS.
+	 * encouraged to use TLS.
 	 *
 	 * @return bool (true) as TLS is not mandatory
 	 */