runtime(doc): update helptags

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/tags b/runtime/doc/tags
index 0b9cdff..5ac1db2 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -6158,6 +6158,7 @@
 bug-fixes-7	version7.txt	/*bug-fixes-7*
 bug-fixes-8	version8.txt	/*bug-fixes-8*
 bug-fixes-9	version9.txt	/*bug-fixes-9*
+bug-fixes-9.1	version9.txt	/*bug-fixes-9.1*
 bug-reports	intro.txt	/*bug-reports*
 bugreport.vim	intro.txt	/*bugreport.vim*
 bugs	intro.txt	/*bugs*
@@ -9188,6 +9189,7 @@
 patches-9	version9.txt	/*patches-9*
 patches-9.1	version9.txt	/*patches-9.1*
 patches-after-8.2	version9.txt	/*patches-after-8.2*
+patches-after-9.0	version9.txt	/*patches-after-9.0*
 pathshorten()	builtin.txt	/*pathshorten()*
 pattern	pattern.txt	/*pattern*
 pattern-atoms	pattern.txt	/*pattern-atoms*