docs: the fzf example for lazysecrets list hides the link and binds open and copy

docs/links.md

@@ -144,11 +144,18 @@ tab-separated. It's what Go to searches, so fzf, or an editor's picker,
 can search it instead, showing the names and acting on the links:
 
 ```sh
-lazysecrets list | fzf --ansi --delimiter='\t' --with-nth=1 \
-  --bind 'enter:become(lazysecrets open {2})' \
-  --bind 'ctrl-y:execute-silent(lazysecrets get {2} | pbcopy)'
+lazysecrets list | fzf --ansi --with-nth='..-2' --accept-nth=-1 \
+  --bind 'ctrl-o:become(lazysecrets open {-1})' \
+  --bind 'ctrl-y:execute-silent(lazysecrets get {-1} | pbcopy)'
 ```
 
+`--with-nth='..-2'` shows and searches the names, leaving out the link,
+the last field; `{-1}` and `--accept-nth=-1` are the link. `enter` prints
+it (`lazysecrets get $(…)`), `ctrl-o` opens it in lazysecrets and `ctrl-y`
+copies the value (`pbcopy` on macOS; `wl-copy` or `xclip` on Linux). A
+value copied this way isn't cleared from the clipboard after
+`values.clipboardClear`, as one copied in lazysecrets is.
+
 What's [cached](config.md#cache) prints at once. Then, like Go to, it loads
 what's missing or older than `--max-age` (2m), and what's new in it follows
 as it arrives: fzf shows it while you type. `--cached` loads nothing from