Bind sieve-refresh-scriptlist to 'g' in sieve-mode

* lisp/net/sieve.el (sieve-manage-mode-map): Bind
`sieve-refersh-scriptlist' to 'g' to refresh buffer.
(sieve-refresh-scriptlist): Highlight in docstring that the function
updates the current sieve buffer.  (Bug#75956)

* doc/misc/sieve.texi (Managing Sieve): Document new keybinding and the
existing `sieve-refresh-scriptlist` function.

doc/misc/sieve.texi

@@ -213,6 +213,12 @@ Bury the Manage Sieve buffer without closing the connection.
 @findex sieve-help
 Displays help in the minibuffer.
 
+@item g
+@kindex g
+@findex sieve-refresh-scriptlist
+Refresh list of scripts found on the currently opened server.
+Update contents of the current sieve buffer.
+
 @item Q
 @kindex Q
 @findex sieve-manage-quit

etc/NEWS

@@ -545,6 +545,13 @@ When called with a prefix argument, accepting, declining, or tentatively
 accepting an icalendar event will prompt for a comment to add to the
 response.
 
+** Sieve
+
++++
+*** New keybinding to refresh buffer in 'sieve-manage-mode'.
+'sieve-refresh-scriptlist' is now bound to 'g' to refresh the contents
+of the current sieve buffer.
+
 ** Button
 
 +++

lisp/net/sieve.el

@@ -111,6 +111,7 @@ require \"fileinto\";
   ;; various
   "?"      #'sieve-help
   "h"      #'sieve-help
+  "g"      #'sieve-refresh-scriptlist
   ;; activating
   "m"      #'sieve-activate
   "u"      #'sieve-deactivate
@@ -314,7 +315,8 @@ Used to bracket operations which move point in the sieve-buffer."
     (sieve-manage-authenticate)))
 
 (defun sieve-refresh-scriptlist ()
-  "Refresh list of scripts found the currently opened server."
+  "Refresh list of scripts found on the currently opened server.
+Update contents of the current sieve buffer."
   (interactive)
   (with-current-buffer sieve-buffer
     (setq buffer-read-only nil)