Change `SPC ,` to `SPC j c` to go to last change

CHANGELOG.develop

@@ -1010,7 +1010,7 @@ Other:
       (thanks to Dominik Schrempf)
   - Key bindings (thanks to bb2020)
     - ~SPC j (~ to =check-parens=
-    - ~SPC-,~ to =goto-last-change=
+    - ~SPC j c~ to =goto-last-change=
   - Excluded =fundamental-mode= from =spacemacs/check-large-file=
     (thanks to Alexander Miller)
   - Fixed copied dir/path not shown in minibuffer when =select-enable-clipboard=

doc/DOCUMENTATION.org

@@ -2153,6 +2153,7 @@ The ~SPC j~ prefix is for jumping, joining and splitting.
 | ~SPC j (~   | jump to first unbalanced parentheses                                              |
 | ~SPC j $~   | go to the end of line (and set a mark at the previous location in the line)       |
 | ~SPC j b~   | undo a jump (go back to previous location)                                        |
+| ~SPC j c~   | go to last change                                                                 |
 | ~SPC j d~   | jump to a listing of the current directory                                        |
 | ~SPC j D~   | jump to a listing of the current directory (other window)                         |
 | ~SPC j f~   | jump to the definition of an Emacs Lisp function                                  |

layers/+spacemacs/spacemacs-defaults/keybindings.el

@@ -133,8 +133,6 @@
     'universal-argument-more))
 ;; shell command  -------------------------------------------------------------
 (spacemacs/set-leader-keys "!" 'shell-command)
-;; last change  ---------------------------------------------------------------
-(spacemacs/set-leader-keys "," 'goto-last-change)
 ;; applications ---------------------------------------------------------------
 (spacemacs/set-leader-keys
   "ac"  'calc-dispatch
@@ -302,6 +300,7 @@
 (spacemacs/set-leader-keys
   "j0" 'spacemacs/push-mark-and-goto-beginning-of-line
   "j$" 'spacemacs/push-mark-and-goto-end-of-line
+  "jc" 'goto-last-change
   "jf" 'find-function
   "jv" 'find-variable)