Docs reference deprecated left/right grammar for surrounding pairs

[phillco]

Per discussion with @AndreasArvidsson, these have been esoteric for a while since you can use previous or next, and were explicitly deprecated in #2457. Neither pokey or Andreas used them and they were not referenced in any videos.

However the documentation still refers to them:

https://www.cursorless.org/docs/#ambiguous-delimiters----etc

Position your cursor directly next to the delimiter (or just use the delimiter as a mark), and then prefix the name of the delimiter pair with "left" or "right" to force cursorless to expand the selection to the left or right, respectively.

For example:

"take left quad" (with your cursor adjacent to a quote)
"take left pair green double" (with your cursor anywhere)
"take inside right quad"
If your cursor / mark is between two delimiters (not adjacent to one), then saying either "left" or "right" will cause cursorless to just expand to the nearest delimiters on either side, without trying to determine whether they are opening or closing delimiters.

[phillco]

One scenario where these differ:

()|()()

"Take right" selects the pair directly to the right of the cursor but "take next round" would actually take the pair after that, because the pair to the right of the cursor is considered the containing surrounding pair. "take left" behaves the same. So it may not be a completely transparent swap to people if they were depending on this.