From a042e1a1ae6389ceeff0f40866c8234a2ee0985d Mon Sep 17 00:00:00 2001
From: Jordan Brown <Cyberboss@users.noreply.github.com>
Date: Thu, 28 Oct 2021 17:58:08 -0400
Subject: [PATCH] Prevent the rare documentation generation failure (#62312)

Limit to one documentation generation job at a time.
---
 .github/workflows/generate_documentation.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/generate_documentation.yml b/.github/workflows/generate_documentation.yml
index bb19c92e3b7..6aa51422725 100644
--- a/.github/workflows/generate_documentation.yml
+++ b/.github/workflows/generate_documentation.yml
@@ -7,6 +7,7 @@ jobs:
   generate_documentation:
     if: "!contains(github.event.head_commit.message, '[ci skip]')"
     runs-on: ubuntu-20.04
+    concurrency: gen-docs
     steps:
       - uses: actions/checkout@v2
       - name: Setup cache