org-element-cache: Suggest to share warning text as well in the warnings

Multiple users reported that they saw the warning, but did not
actually report the warning text.  It's better to ask about sharing
explicitly.

lisp/org-element.el

@@ -5785,7 +5785,7 @@ Assume ELEMENT belongs to cache and that a cache is active."
         ;; This should not happen, but if it is, would be better to know
         ;; where it happens.
         (org-element--cache-warn "Failed to delete %S element in %S at %S. The element cache key was %S.
-If this warning appears regularly, please report it to Org mode mailing list (M-x org-submit-bug-report)."
+If this warning appears regularly, please report the warning text to Org mode mailing list (M-x org-submit-bug-report)."
                       (org-element-type element)
                       (current-buffer)
                       (org-element-property :begin element)
@@ -5905,7 +5905,7 @@ actually submitted."
                            (not (version< emacs-version "28")))
                       (and (boundp 'org-batch-test) org-batch-test))
               (org-element--cache-warn "Unregistered buffer modifications detected. Resetting.
-If this warning appears regularly, please report it to Org mode mailing list (M-x org-submit-bug-report).
+If this warning appears regularly, please report the warning text to Org mode mailing list (M-x org-submit-bug-report).
 The buffer is: %s\n Current command: %S\n Chars modified: %S\n Buffer modified: %S\n Backtrace:\n%S"
                             (buffer-name (current-buffer))
                             (list this-command (buffer-chars-modified-tick) (buffer-modified-tick))
@@ -6297,7 +6297,9 @@ completing the request."
                          ;; such error happens within
                          ;; `org-element--cache-process-request' or somewhere
                          ;; else.
-                         (org-element--cache-warn "Added org-data parent to non-headline element: %S\nIf this warning appears regularly, please report it to Org mode mailing list (M-x org-submit-bug-report)." data)
+                         (org-element--cache-warn "Added org-data parent to non-headline element: %S
+If this warning appears regularly, please report the warning text to Org mode mailing list (M-x org-submit-bug-report)."
+                                       data)
                          (org-element-cache-reset)
                          (throw 'org-element--cache-quit t))
 		       (org-element-put-property data :parent parent)
@@ -7008,7 +7010,7 @@ Return non-nil when verification failed."
         (unless (or (= (point) (org-element-property :begin (org-element-property :parent element)))
                     (eq (point) (point-min)))
           (org-element--cache-warn "Cached element has wrong parent in %s. Resetting.
-If this warning appears regularly, please report it to Org mode mailing list (M-x org-submit-bug-report).
+If this warning appears regularly, please report the warning text to Org mode mailing list (M-x org-submit-bug-report).
 The element is: %S\n The parent is: %S\n The real parent is: %S"
                         (buffer-name (current-buffer))
                         (org-element--format-element element)
@@ -7036,7 +7038,7 @@ The element is: %S\n The parent is: %S\n The real parent is: %S"
                      (or (not (org-element-property :ID real-element))
                          (string= (org-element-property :ID real-element) (org-element-property :ID element))))
           (org-element--cache-warn "(%S) Cached element is incorrect in %s. (Cache tic up to date: %S) Resetting.
-If this warning appears regularly, please report it to Org mode mailing list (M-x org-submit-bug-report).
+If this warning appears regularly, please report the warning text to Org mode mailing list (M-x org-submit-bug-report).
 The element is: %S\n The real element is: %S\n Cache around :begin:\n%S\n%S\n%S"
                         this-command
                         (buffer-name (current-buffer))