Docs: Switch more docs over to typed array notation, plus some fixes.

See #48303, #41756


git-svn-id: https://develop.svn.wordpress.org/trunk@46596 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-xmlrpc-server.php

@@ -161,7 +161,7 @@ class wp_xmlrpc_server extends IXR_Server {
 		 *
 		 * @since 1.5.0
 		 *
-		 * @param array $methods An array of XML-RPC methods.
+		 * @param string[] $methods An array of XML-RPC methods, keyed by their methodName.
 		 */
 		$this->methods = apply_filters( 'xmlrpc_methods', $this->methods );
 	}