patch 8.2.3979: Vim9: the feature is not mentioned in the right places

Problem:    Vim9: the feature is not mentioned in the right places.
Solution:   Add +vim9script to the help and :version output.
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 8d2cc5e..c18df8a 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -10069,6 +10069,7 @@
 			(always true)
 vim_starting		True while initial source'ing takes place. |startup|
 			*vim_starting*
+vim9script		Compiled with |Vim9| script support
 viminfo			Compiled with viminfo support.
 vimscript-1		Compiled Vim script version 1 support
 vimscript-2		Compiled Vim script version 2 support
diff --git a/runtime/doc/various.txt b/runtime/doc/various.txt
index 5b8654b..da44546 100644
--- a/runtime/doc/various.txt
+++ b/runtime/doc/various.txt
@@ -476,9 +476,10 @@
 T  *+user_commands*	User-defined commands. |user-commands|
 			Always enabled since 8.1.1210.
 B  *+vartabs*		Variable-width tabstops. |'vartabstop'|
-N  *+viminfo*		|'viminfo'|
 T  *+vertsplit*		Vertically split windows |:vsplit|; Always enabled
 			since 8.0.1118.
+T  *+vim9script*	|Vim9| script
+N  *+viminfo*		|'viminfo'|
 T  *+virtualedit*	|'virtualedit'| Always enabled since 8.1.826.
 T  *+visual*		Visual mode |Visual-mode| Always enabled since 7.4.200.
 T  *+visualextra*	extra Visual mode commands |blockwise-operators|