Add docstring to align-repeat-x commands

Update 'spacemacs|create-align-repeat-x macro to add a docstring to created
functions. The docstring refers the user to the macro, providing a link to
the source code.

CHANGELOG.develop

@@ -933,6 +933,8 @@ Other:
                spacemacs/window-split-triple-columns
                spacemacs/window-split-grid)
     (thanks to Thanh Vuong)
+  - Added a link to =spacemacs|create-align-repeat-x= in the docstring for
+     =align-repeat-= commands (thanks to Troy Pracy)
 - Fixed:
   - Fixed ~h~ key binding in compilation and grep buffers
     (thanks to Sylvain Benner)

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

@@ -1132,11 +1132,14 @@ the right."
                 nil))
 
 (defmacro spacemacs|create-align-repeat-x (name regexp &optional justify-right default-after)
-  (let ((new-func (intern (concat "spacemacs/align-repeat-" name))))
-    `(defun ,new-func (start end switch)
-       (interactive "r\nP")
-       (let ((after (not (eq (if switch t nil) (if ,default-after t nil)))))
-         (spacemacs/align-repeat start end ,regexp ,justify-right after)))))
+  (let* ((new-func (intern (concat "spacemacs/align-repeat-" name)))
+         (new-func-defn
+          `(defun ,new-func (start end switch)
+             (interactive "r\nP")
+             (let ((after (not (eq (if switch t nil) (if ,default-after t nil)))))
+               (spacemacs/align-repeat start end ,regexp ,justify-right after)))))
+    (put new-func 'function-documentation "Created by `spacemacs|create-align-repeat-x'.")
+    new-func-defn))
 
 (spacemacs|create-align-repeat-x "comma" "," nil t)
 (spacemacs|create-align-repeat-x "semicolon" ";" nil t)