Further doc string quoting fixes

* test/lisp/progmodes/cperl-mode-tests.el (cperl--run-test-cases):
* lisp/simple.el (undo-equiv-table):
* lisp/shell.el (shell-mode):
(shell-mode):
* lisp/recentf.el (recentf-mode):
* lisp/org/ob-table.el (org-sbe):
* lisp/net/eudc.el (eudc-rfc5322-cctext-token):
* lisp/mail/ietf-drums-date.el (ietf-drums-date--slot-ranges):
* lisp/faces.el (color-luminance-dark-limit):
* lisp/erc/erc.el (erc-tls):
* lisp/emacs-lisp/pcase.el (pcase-setq): Further quoting fixes in
doc strings.

1 files changed, 2 insertions, 2 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index 323d51dd2d3..75720d895cc 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -3008,12 +3008,12 @@ the minibuffer contents."
 
 (defconst undo-equiv-table (make-hash-table :test 'eq :weakness t)
   "Table mapping redo records to the corresponding undo one.
-A redo record for an undo in region maps to 'undo-in-region.
+A redo record for an undo in region maps to `undo-in-region'.
 A redo record for ordinary undo maps to the following (earlier) undo.
 A redo record that undoes to the beginning of the undo list maps to t.
 In the rare case where there are (erroneously) consecutive nil's in
 `buffer-undo-list', `undo' maps the previous valid undo record to
-'empty, if the previous record is a redo record, `undo' doesn't change
+`empty', if the previous record is a redo record, `undo' doesn't change
 its mapping.
 
 To be clear, a redo record is just an undo record, the only difference