Fix test and documents for :custom-face

README.md

@@ -494,7 +494,7 @@ The `:custom-face` keyword allows customization of package custom faces.
 (use-package example
   :custom-face
   (example-1-face ((t (:foreground "LightPink"))))
-  (example-2-face ((t (:foreground "LightGreen"))) face-defspec-spec))
+  (example-2-face ((t (:foreground "LightGreen"))) face-defface-spec))
 
 (use-package zenburn-theme
   :preface

use-package-core.el

@@ -1674,7 +1674,7 @@ Usage:
 :custom          Call `Custom-set' or `set-default' with each variable
                  definition without modifying the Emacs `custom-file'.
                  (compare with `custom-set-variables').
-:custom-face     Call `custom-set-faces' with each face definition.
+:custom-face     Call `face-spec-set' with each face definition.
 :ensure          Loads the package using package.el if necessary.
 :pin             Pin the package to an archive."
   (declare (indent defun))

use-package-tests.el

@@ -1171,9 +1171,9 @@
 
 (ert-deftest use-package-test/:custom-face-3 ()
   (match-expansion
-   (use-package foo :custom-face (foo ((t (:background "#e4edfc"))) face-defspec-spec))
+   (use-package foo :custom-face (foo ((t (:background "#e4edfc"))) face-defface-spec))
    `(progn
-      (apply #'face-spec-set (backquote (foo ((t (:background "#e4edfc"))) face-defspec-spec)))
+      (apply #'face-spec-set (backquote (foo ((t (:background "#e4edfc"))) face-defface-spec)))
       (require 'foo nil nil))))
 
 (ert-deftest use-package-test/:init-1 ()

use-package.texi

@@ -1234,7 +1234,7 @@ faces.
 (use-package example
   :custom-face
   (example-1-face ((t (:foreground "LightPink"))))
-  (example-2-face ((t (:foreground "LightGreen"))) face-defspec-spec))
+  (example-2-face ((t (:foreground "LightGreen"))) face-defface-spec))
 
 (use-package zenburn-theme
   :preface