fix: update method names to match code style

src/WpdbMigrator.php

@@ -26,7 +26,7 @@ class WpdbMigrator implements Migrator {
 	private $logger;
 
 	/** @param string[] $migration_directories */
-	public static function fromDirectories( array $migration_directories ): self {
+	public static function from_directories( array $migration_directories ): self {
 		global $wpdb;
 		$logger = new WpdbLogger();
 
@@ -47,7 +47,7 @@ class WpdbMigrator implements Migrator {
 	}
 
 	/** @param class-string<AbstractMigration>[] $migration_class_names */
-	public static function fromClasses( array $migration_class_names ): self {
+	public static function from_classes( array $migration_class_names ): self {
 		global $wpdb;
 		$logger = new WpdbLogger();