ci: Enable mdformat check action

Add mdformat.yaml to check markdown style in repository.

Signed-off-by: Ruoqing He <[email protected]>

Author: RuoqingHe

Diff for: .github/workflows/mdformat.yaml

@@ -0,0 +1,26 @@
+name: Markdown style check
+on:
+  pull_request:
+  merge_group:
+  push:
+    branches:
+      - main
+
+jobs:
+  md-style-checker:
+    name: Check Markdown Style
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Install mdformat
+      run: |
+        sudo apt update
+        sudo apt install python3 python3-pip pipx
+        pipx install mdformat
+        pipx inject mdformat mdformat-gfm mdformat-frontmatter mdformat-footnote mdformat-gfm-alerts
+    
+    - name: Check Content Style
+      run: |
+        mdformat --check .

Diff for: src/SUMMARY.md

@@ -2,6 +2,6 @@
 
 # How to Manage Mono-repo
 
-- [Firecraker]()
-    - [Markdown Files](repo-management/firecracker/markdown.md)
-    - [Rust Files](repo-management/firecracker/rustfmt.md)
+- [Firecraker](<>)
+  - [Markdown Files](repo-management/firecracker/markdown.md)
+  - [Rust Files](repo-management/firecracker/rustfmt.md)

Diff for: src/research/pvm/requirements.md

@@ -10,5 +10,3 @@ cloud. State-of-the-art nested virtualization in the x86 architecture relies
 heavily on the host hypervisor to expose hardware virtualization support to the
 guest hypervisor, not only complicating cloud management but also raising
 concerns about an increased attack surface at the host hypervisor.
-
-