gnu: guile-wisp: Update home page.

* gnu/packages/guile.scm (guile-wisp)[home-page]: Use HTTPS.

gnu/packages/guile.scm

@@ -1346,7 +1346,7 @@ (define-public guile-wisp
                                     file "-o" go)))
                         (find-files module-dir "\\.scm$"))
               #t))))))
-    (home-page "http://draketo.de/english/wisp")
+    (home-page "https://draketo.de/english/wisp")
     (inputs
      `(("guile" ,guile-2.2)))
     (native-inputs