gnu: moreutils: Use 'modify-phases'.

* gnu/packages/moreutils.scm (moreutils)[arguments]: Use 'modify-phases'.

gnu/packages/moreutils.scm

@@ -46,8 +46,8 @@
               ("docbook-xsl" ,docbook-xsl)))
     (arguments
      `(#:phases
-       (alist-replace
-        'configure
+       (modify-phases %standard-phases
+         (replace 'configure
            (lambda* (#:key inputs #:allow-other-keys)
              (use-modules (srfi srfi-1))
              (substitute* "Makefile"
@@ -56,8 +56,7 @@
                        (files (find-files docbook-xsl "^docbook\\.xsl$")))
                   (find (lambda (file)
                           (string-suffix? "/manpages/docbook.xsl" file))
-                     files)))))
-        %standard-phases)
+                        files)))))))
        #:make-flags
        (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
              "CC=gcc")))