[3.9.26] typos (#33121)

Fix obvious typos/spelling

libraries/src/Form/Rule/ModuleLayoutRule.php

@@ -25,9 +25,9 @@ class ModuleLayoutRule extends FormRule
 	 * A valid module layout field value consists of
 	 * - optionally a template name with only characters, numbers, hypens and
 	 *   underscores, which can also be just "_" for layouts provided by the
-	 *   module, followed by a colon
+	 *   module, followed by a colon.
 	 * - the base name of the layout file, not starting with a dot and with
-	 *   only characters, numbers, dots and hypens but no underscores (see
+	 *   only characters, numbers, dots and hyphens but no underscores (see
 	 *   method "getInput" of the "ModuleLayout" field).
 	 *
 	 * @var    string