Improve two docstrings in ox-latex

* lisp/org/ox-latex.el (org-latex-src-block-backend)
(org-latex-engraved-theme): Improve docstring; mention that
engrave-faces is a GNU ELPA package.

(cherry picked from commit 6653ee66ca5ebd42322613a09d4c0d2e35af924b)

diff --git a/lisp/org/ox-latex.el b/lisp/org/ox-latex.el
index 9d250f716b6853f613e48ef97d14286646f49d4c..3d260a32a2e8c94a590854cd0a353e4351849dae 100644 (file)
--- a/lisp/org/ox-latex.el
+++ b/lisp/org/ox-latex.el
@@ -978,7 +978,7 @@ The most comprehensive option can be set with,
 which causes source code to be run through
 `engrave-faces-latex-buffer', which generates colorings using
 Emacs' font-lock information.  This requires the Emacs package
-engrave-faces (available from ELPA), and the LaTeX package
+engrave-faces (available from GNU ELPA), and the LaTeX package
 fvextra be installed.
 
 The styling of the engraved result can be customized with
@@ -1262,9 +1262,10 @@ block-specific options, you may use the following syntax:
 
 (defcustom org-latex-engraved-theme nil
   "The theme that should be used for engraved code, when non-nil.
-This can be set to any theme defined in `engrave-faces-themes' or
-loadable by Emacs.  When set to t, the current Emacs theme is
-used.  When nil, no theme is applied."
+This can be set to any theme defined in `engrave-faces-themes'
+(from the engrave-faces package) or loadable by Emacs.  When set
+to t, the current Emacs theme is used.  When nil, no theme is
+applied."
   :group 'org-export-latex
   :package-version '(Org . "9.6")
   :type 'symbol)