PATCH: Add missing detailmenu texi gunk

ref https://www.gnu.org/software/texinfo//manual/texinfo/html_node/Master-Menu-Parts.html
---

Does this fix it and/or not cause any new problems? It seems to work
fine for me with texinfo 6.8.

 Doc/Zsh/manual.yo | 2 ++
 Doc/ztexi.yo      | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/Doc/Zsh/manual.yo b/Doc/Zsh/manual.yo
index c7882cebd2..ba38cbfe4f 100644
--- a/Doc/Zsh/manual.yo
+++ b/Doc/Zsh/manual.yo
@@ -49,6 +49,7 @@ menu(Functions Index)
 menu(Editor Functions Index)
 menu(Style and Tag Index)
 
+startdetailmenu()
  --- The Detailed Node Listing ---
 
 Introduction
@@ -176,6 +177,7 @@ menu(Mathematical Functions)
 menu(User Configuration Functions)
 menu(Other Functions)
 
+enddetailmenu()
 endmenu()
 texinode(The Z Shell Manual)(Introduction)(Top)(Top)
 chapter(The Z Shell Manual)
diff --git a/Doc/ztexi.yo b/Doc/ztexi.yo
index b754bf2520..943988b62f 100644
--- a/Doc/ztexi.yo
+++ b/Doc/ztexi.yo
@@ -256,6 +256,12 @@ def(endmenu)(0)(\
 def(menu)(1)(\
   * ARG1+NOTRANS(::)\
 )
+def(startdetailmenu)(0)(\
+  NOTRANS(@detailmenu)\
+)
+def(enddetailmenu)(0)(\
+  NOTRANS(@end detailmenu)\
+)
 
 COMMENT(--- indices ---)
 
-- 
2.38.1