From f64346963aef2816a33d4ba6764e5bf5c0d71c4d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=AD=20Bol=C3=ADvar?= <marti.bolivar@nordicsemi.no>
Date: Thu, 27 May 2021 13:28:13 -0700
Subject: [PATCH] doc: mainpage.md: fix for new doxygen
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

I'm getting the following error on doxygen 1.9.1:

.../zephyr/doc/custom-doxygen/mainpage.md:1:
error: multiple use of section label 'index' for main page,
(first occurrence:
.../zephyr/doc/custom-doxygen/mainpage.md, line 1)
(warning treated as error, aborting now)

Extension error (zephyr.doxyrunner):
Handler <function doxygen_build at 0x7f1abf9e30d0>
for event 'builder-inited' threw an exception
(exception: Doxygen process returned non-zero (1))

This fixes it for me without breaking anything in
_build/doxygen/html/index.html that I can see.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
---
 doc/custom-doxygen/mainpage.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/custom-doxygen/mainpage.md b/doc/custom-doxygen/mainpage.md
index f0b5638f74d..2a0e3f9a163 100644
--- a/doc/custom-doxygen/mainpage.md
+++ b/doc/custom-doxygen/mainpage.md
@@ -1,4 +1,4 @@
-# API Documentation   {#index}
+# API Documentation
 
 ## Introduction