gnu: perl-mail-spf: Clean up.

* gnu/packages/mail.scm (perl-mail-spf): Re-indent.
[version]: Drop leading ‘v’.

gnu/packages/mail.scm

@@ -1843,24 +1843,24 @@ Khard can also be used from within the email client @command{mutt}.")
 (define-public perl-mail-spf
   (package
     (name "perl-mail-spf")
-  (version "v2.9.0")
+    (version "2.9.0")
     (source
      (origin
        (method url-fetch)
        (uri (string-append
-             "mirror://cpan/authors/id/J/JM/JMEHNLE/mail-spf/Mail-SPF-"
+             "mirror://cpan/authors/id/J/JM/JMEHNLE/mail-spf/Mail-SPF-v"
              version
              ".tar.gz"))
        (sha256
-        (base32
-          "0qk1rfgfm5drj4iyniiabrasrpqv570vzhgz66lwgb67y4amkjv1"))))
+        (base32 "0qk1rfgfm5drj4iyniiabrasrpqv570vzhgz66lwgb67y4amkjv1"))))
     (build-system perl-build-system)
     (native-inputs
      `(("perl-module-build" ,perl-module-build)
        ("perl-net-dns-resolver-programmable"
         ,perl-net-dns-resolver-programmable)))
     (arguments
-   `(#:phases (modify-phases %standard-phases
+     `(#:phases
+       (modify-phases %standard-phases
          (add-before 'configure 'modify-Build.PL
            (lambda* (#:key outputs #:allow-other-keys)
              (substitute* "Build.PL"
@@ -1873,10 +1873,8 @@ Khard can also be used from within the email client @command{mutt}.")
        ("perl-net-dns" ,perl-net-dns)
        ("perl-netaddr-ip" ,perl-netaddr-ip)
        ("perl-uri" ,perl-uri)))
-  (home-page
-    "https://metacpan.org/release/Mail-SPF")
-  (synopsis
-    "Perl implementation of Sender Policy Framework")
+    (home-page "https://metacpan.org/release/Mail-SPF")
+    (synopsis "Perl implementation of Sender Policy Framework")
     (description "Mail::SPF is the Sender Policy Framework implemented
 in Perl.")
     (license bsd-3)))