runtime(doc): add help tag describing object-selection

closes: #13114

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/motion.txt b/runtime/doc/motion.txt
index 2ddd1b9..c89eead 100644
--- a/runtime/doc/motion.txt
+++ b/runtime/doc/motion.txt
@@ -1,4 +1,4 @@
-*motion.txt*    For Vim version 9.0.  Last change: 2022 Sep 26
+*motion.txt*    For Vim version 9.0.  Last change: 2023 Sep 18
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -683,6 +683,7 @@
 			Special case: With a count of 2 the quotes are
 			included, but no extra white space as with a"/a'/a`.
 
+							*o_object-select*
 When used after an operator:
 For non-block objects:
 	For the "a" commands: The operator applies to the object and the white
@@ -698,6 +699,7 @@
 	the surrounding braces are excluded.  For the "a" commands, the braces
 	are included.
 
+							*v_object-select*
 When used in Visual mode:
 When start and end of the Visual area are the same (just after typing "v"):
 	One object is selected, the same as for using an operator.
diff --git a/runtime/doc/tags b/runtime/doc/tags
index b754f08..8cfd188 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -9043,6 +9043,7 @@
 o	insert.txt	/*o*
 o_CTRL-V	motion.txt	/*o_CTRL-V*
 o_V	motion.txt	/*o_V*
+o_object-select	motion.txt	/*o_object-select*
 o_v	motion.txt	/*o_v*
 object	vim9class.txt	/*object*
 object-motions	motion.txt	/*object-motions*
@@ -10860,6 +10861,7 @@
 v_i{	motion.txt	/*v_i{*
 v_i}	motion.txt	/*v_i}*
 v_o	visual.txt	/*v_o*
+v_object-select	motion.txt	/*v_object-select*
 v_p	change.txt	/*v_p*
 v_r	change.txt	/*v_r*
 v_s	change.txt	/*v_s*