fixed typo

src/Composer/Package/PackageInterface.php

@@ -283,7 +283,7 @@ interface PackageInterface
      * directories for autoloading using the type specified.
      *
      * @return array Mapping of autoloading rules
-     * @psalm-return array{psr-0?: array<string, string>, psr-4?: array<string, string>, classmap?: list<string>, file?: list<string>}
+     * @psalm-return array{psr-0?: array<string, string>, psr-4?: array<string, string>, classmap?: list<string>, files?: list<string>}
      */
     public function getAutoload();
 
@@ -296,7 +296,7 @@ interface PackageInterface
      * directories for autoloading using the type specified.
      *
      * @return array Mapping of dev autoloading rules
-     * @psalm-return array{psr-0?: array<string, string>, psr-4?: array<string, string>, classmap?: list<string>, file?: list<string>}
+     * @psalm-return array{psr-0?: array<string, string>, psr-4?: array<string, string>, classmap?: list<string>, files?: list<string>}
      */
     public function getDevAutoload();