* lisp/find-dired.el (find-grep-dired): Doc fix. (Bug#29262)

lisp/find-dired.el

@@ -255,14 +255,14 @@ See `find-name-arg' to customize the arguments."
 (defalias 'lookfor-dired 'find-grep-dired)
 ;;;###autoload
 (defun find-grep-dired (dir regexp)
-  "Find files in DIR matching a regexp REGEXP and start Dired on output.
+  "Find files in DIR that contain matches for REGEXP and start Dired on output.
 The command run (after changing into DIR) is
 
   find . \\( -type f -exec `grep-program' `find-grep-options' \\
     -e REGEXP {} \\; \\) -ls
 
-where the car of the variable `find-ls-option' specifies what to
-use in place of \"-ls\" as the final argument."
+where the first string in the value of the variable `find-ls-option'
+specifies what to use in place of \"-ls\" as the final argument."
   ;; Doc used to say "Thus ARG can also contain additional grep options."
   ;; i) Presumably ARG == REGEXP?
   ;; ii) No it can't have options, since it gets shell-quoted.