runtime(doc): Update Section 4 of vim9.txt

closes: #18610

Signed-off-by: Peter Kenny <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>

Author: kennypete

runtime/doc/tags

@@ -8696,6 +8696,7 @@ instanceof()	builtin.txt	/*instanceof()*
 intel-itanium	syntax.txt	/*intel-itanium*
 intellimouse-wheel-problems	gui_w32.txt	/*intellimouse-wheel-problems*
 interactive-functions	usr_41.txt	/*interactive-functions*
+interface	vim9class.txt	/*interface*
 interfaces-5.2	version5.txt	/*interfaces-5.2*
 internal-error	message.txt	/*internal-error*
 internal-variables	eval.txt	/*internal-variables*
@@ -11595,21 +11596,26 @@ vim9-access-modes	vim9class.txt	/*vim9-access-modes*
 vim9-autoload	vim9.txt	/*vim9-autoload*
 vim9-boolean	vim9.txt	/*vim9-boolean*
 vim9-class	vim9class.txt	/*vim9-class*
+vim9-class-type	vim9.txt	/*vim9-class-type*
 vim9-classes	vim9.txt	/*vim9-classes*
 vim9-const	vim9.txt	/*vim9-const*
 vim9-curly	vim9.txt	/*vim9-curly*
 vim9-debug	repeat.txt	/*vim9-debug*
 vim9-declaration	vim9.txt	/*vim9-declaration*
 vim9-declarations	usr_41.txt	/*vim9-declarations*
 vim9-differences	vim9.txt	/*vim9-differences*
+vim9-enum-type	vim9.txt	/*vim9-enum-type*
+vim9-enumvalue-type	vim9.txt	/*vim9-enumvalue-type*
 vim9-export	vim9.txt	/*vim9-export*
 vim9-false-true	vim9.txt	/*vim9-false-true*
 vim9-final	vim9.txt	/*vim9-final*
 vim9-func-declaration	vim9.txt	/*vim9-func-declaration*
+vim9-func-type	vim9.txt	/*vim9-func-type*
 vim9-function-defined-later	vim9.txt	/*vim9-function-defined-later*
 vim9-gotchas	vim9.txt	/*vim9-gotchas*
 vim9-ignored-argument	vim9.txt	/*vim9-ignored-argument*
 vim9-import	vim9.txt	/*vim9-import*
+vim9-interface-type	vim9.txt	/*vim9-interface-type*
 vim9-lambda	vim9.txt	/*vim9-lambda*
 vim9-lambda-arguments	vim9.txt	/*vim9-lambda-arguments*
 vim9-line-continuation	vim9.txt	/*vim9-line-continuation*
@@ -11618,11 +11624,14 @@ vim9-mix	vim9.txt	/*vim9-mix*
 vim9-namespace	vim9.txt	/*vim9-namespace*
 vim9-no-dict-function	vim9.txt	/*vim9-no-dict-function*
 vim9-no-shorten	vim9.txt	/*vim9-no-shorten*
+vim9-object-type	vim9.txt	/*vim9-object-type*
+vim9-partial-declaration	vim9.txt	/*vim9-partial-declaration*
 vim9-rationale	vim9.txt	/*vim9-rationale*
 vim9-reload	vim9.txt	/*vim9-reload*
 vim9-s-namespace	vim9.txt	/*vim9-s-namespace*
 vim9-scopes	vim9.txt	/*vim9-scopes*
 vim9-string-index	vim9.txt	/*vim9-string-index*
+vim9-typealias-type	vim9.txt	/*vim9-typealias-type*
 vim9-types	vim9.txt	/*vim9-types*
 vim9-unpack-ignore	vim9.txt	/*vim9-unpack-ignore*
 vim9-user-command	vim9.txt	/*vim9-user-command*