runtime(doc): rename last t_BG reference to t_RB
This was missed in 37c64c78fd87e086b5a945ad7032787c274e2dcb.
closes: #16491
Signed-off-by: Jon Parise <jon@indelible.org>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 018f10d..d689fe1 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt* For Vim version 9.1. Last change: 2025 Jan 14
+*options.txt* For Vim version 9.1. Last change: 2025 Jan 20
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1033,7 +1033,7 @@
When the |t_RB| option is set, Vim will use it to request the background
color from the terminal. If the returned RGB value is dark/light and
'background' is not dark/light, 'background' will be set and the
- screen is redrawn. This may have side effects, make t_BG empty in
+ screen is redrawn. This may have side effects, make |t_RB| empty in
your .vimrc if you suspect this problem. The response to |t_RB| can
be found in |v:termrbgresp|.