Revert back file save on `SPC f s`

contrib/!lang/ipython-notebook/README.org

@@ -117,7 +117,7 @@ In normal mode the following key bindings are defined:
 | ~C-RET~ | ein:worksheet-execute-cell               |
 | ~S-RET~ | ein:worksheet-execute-cell-and-goto-next |
 
-Also ~SPC f w~ saves the notebook like you would a regular buffer.
+Also ~SPC f s~ saves the notebook like you would a regular buffer.
 
 *** Insert mode
 In normal mode the following key bindings are defined:

contrib/!lang/ipython-notebook/packages.el

@@ -100,7 +100,7 @@
         "m-" 'ein:notebook-worksheet-delete
         "mx" 'ein:notebook-close
         "mu" 'ein:worksheet-change-cell-type
-        "fw" 'ein:notebook-save-notebook-command)
+        "fs" 'ein:notebook-save-notebook-command)
 
       ;; keybindings mirror ipython web interface behavior
       (evil-define-key 'insert ein:notebook-multilang-mode-map

doc/DOCUMENTATION.org

@@ -556,7 +556,7 @@ So with =Spacemacs= there is no need to remap your keyboard modifiers to attempt
 to reduce the risk of RSI, every command can be executed very easily while you
 are in =normal= mode by pressing the ~SPC~ leader key, here are a few examples:
 
--  Save a buffer: ~SPC f w~
+-  Save a buffer: ~SPC f s~
 -  Save all opened buffers: ~SPC f S~
 -  Open (switch) to a buffer with =helm=: ~SPC b b~
 

spacemacs/keybindings.el

@@ -121,8 +121,8 @@ Ensure that helm is required before calling FUNC."
   "fj" 'dired-jump
   "fo" 'spacemacs/open-in-external-app
   "fR"  'rename-current-buffer-file
-  "fW" 'evil-write-all
-  "fw" 'evil-write
+  "fS" 'evil-write-all
+  "fs" 'evil-write
   "fy" 'show-and-copy-buffer-filename)
 ;; insert stuff ---------------------------------------------------------------
 (evil-leader/set-key