[3.11] GH-105900: Fix `pathlib.Path.symlink_to(target_is_directory=...)` docs (GH-114035) (#114465)

Clarify that *target_is_directory* only matters if the target doesn't
exist.
(cherry picked from commit b822b85ac11e73bbe4417bf03ee770ab116bb42d)

Co-authored-by: Barney Gale <barney.gale@gmail.com>

Miss Islington (bot) committed 2y ago

1f04ac8e277a744193db08079582462a11c80331

Parent: 9d2ad6f

Committed by GitHub <noreply@github.com> on 1/23/2024, 5:37:32 AM