fix links

layers/+intl/keyboard-layout/README.org

@@ -271,7 +271,7 @@ difficult to list them all. For example the key bindings change if:
 So the price you have to pay is the absence of a key bindings list.
 
 * Image sources
-- The keyboard-layout layer logo is a modified image from [[https://openclipart.org/detail/202777/keyboard-layout][openclipart.org]], and
+- The keyboard-layout layer logo is a modified image from [[https://web.archive.org/web/20170318110408/https://openclipart.org/detail/202777/keyboard-layout][openclipart.org]], and
   is under the public domain.
 - The Bepo logo and layout images, are from the official [[http://bepo.fr/][bepo]] website. (the
   layout image has been modified).

layers/+lang/clojure/README.org

@@ -531,7 +531,7 @@ In general, ~q~ should always quit the popped up buffer.
 
 * Development Notes
 ** Indentation
-With a [[https://github.com/clojure-emacs/cider/blob/master/doc/indent_spec.md][new]] functionality of Cider to read the custom indentation rules from the
+With a [[https://github.com/clojure-emacs/cider/blob/master/legacy-manual/indent_spec.md][new]] functionality of Cider to read the custom indentation rules from the
 var's metadata, it is better for consistency reasons to not add the custom
 indentation rules to Spacemacs, but to add them to the metadata of those
 specific vars.

layers/+source-control/github/README.org

@@ -35,7 +35,7 @@ add =github= to the existing =dotspacemacs-configuration-layers= list in this
 file.
 
 ** Git configuration
-You will need to generate a [[https://github.com/settings/tokens][personal access token]] on GitHub. This token should
+You will need to generate a [[https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line][personal access token]] on GitHub. This token should
 have the =gist= and =repo= permissions. Once this token is created, it needs to
 be added to your =~/.gitconfig=