[monitoring-plugins] Add missing document start

[Jan Wagner]

 Module: monitoring-plugins
 Branch: master
 Commit: 73d79c2982478d43e8c63dccc3e54421272e2cbd
 Author: Jan Wagner <waja at cyconet.org>
   Date: Wed Jun 28 15:38:14 2023 +0200
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=73d79c2

Add missing document start

---

 .github/dependabot.yml                | 1 +
 .github/workflows/codeql-analysis.yml | 1 +
 .github/workflows/test.yml            | 1 +
 3 files changed, 3 insertions(+)

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 282063c..0707364 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,3 +1,4 @@
+---
 version: 2
 updates:
   - package-ecosystem: github-actions
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index b56ac16..4fac703 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -1,3 +1,4 @@
+---
 # For most projects, this workflow file will not need changing; you simply need
 # to commit it to your repository.
 #
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 88d5d66..306f21c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,3 +1,4 @@
+---
 name: Test
 
 on: