gnu: emacs-elisp-demos: Update to 2019.08.16.

* gnu/packages/emacs-xyz.scm (emacs-elisp-demos): Update to 2019.08.16.

Signed-off-by: Oleg Pykhalov <go.wigust@gmail.com>

gnu/packages/emacs-xyz.scm

@@ -3077,22 +3077,19 @@ for Flow files.")
       (license license:gpl3+))))
 
 (define-public emacs-elisp-demos
-  (let ((commit "4c1fbc392668662890b685ab297e950259227e06")
-        (version "0.1")
-        (revision "1"))
   (package
     (name "emacs-elisp-demos")
-      (version (git-version version revision commit))
+    (version "2019.08.16")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url "https://github.com/xuchunyang/elisp-demos")
-               (commit commit)))
+             (commit version)))
        (file-name (git-file-name name version))
        (sha256
         (base32
-           "01cbkmjgmzxdf02w9xgbf4bhnx1mh53vvpkri13yxfksym5zizp4"))))
+         "0lybadq66bl4snkwph9i1y0qxln29wyfjn222ii3nfwany28cj66"))))
     (build-system emacs-build-system)
     (arguments '(#:include '("\\.el$" "\\.org$")))
     (home-page "https://github.com/xuchunyang/elisp-demos/")
@@ -3100,7 +3097,7 @@ for Flow files.")
     (description
      "This package injects example uses of Elisp functions into their
 respective @code{*Help*} buffers.")
-      (license license:gpl3+))))
+    (license license:gpl3+)))
 
 (define-public emacs-docker-compose-mode
   (package