Minor wording improvement in "Bookmarks"

* doc/emacs/regs.texi (Bookmarks): Improve wording.  Suggested by
"Siraphob (Ben) Phipathananunth" <siraben@disroot.org>.

doc/emacs/regs.texi

@@ -314,18 +314,18 @@ Save all the current bookmark values in the default bookmark file.
 @findex bookmark-set
 @kindex C-x r b
 @findex bookmark-jump
-  The prototypical use for bookmarks is to record one current position
-in each of several files.  So the command @kbd{C-x r m}, which sets a
-bookmark, uses the visited file name as the default for the bookmark
-name.  If you name each bookmark after the file it points to, then you
-can conveniently revisit any of those files with @kbd{C-x r b}, and move
-to the position of the bookmark at the same time.
+  To record the current position in the visited file, use the command
+@kbd{C-x r m}, which sets a bookmark using the visited file name as
+the default for the bookmark name.  If you name each bookmark after
+the file it points to, then you can conveniently revisit any of those
+files with @kbd{C-x r b}, and move to the position of the bookmark at
+the same time.
 
 @kindex C-x r M
 @findex bookmark-set-no-overwrite
   The command @kbd{C-x r M} (@code{bookmark-set-no-overwrite}) works
-like @kbd{C-x r m}, but it signals an error if the specified bookmark
-already exists, instead of overwriting it.
+like @w{@kbd{C-x r m}}, but it signals an error if the specified
+bookmark already exists, instead of overwriting it.
 
 @kindex C-x r l
 @findex list-bookmarks