Style: Global Markdown structural and formatting &&audit & fix

projects/Docker/index.md

@@ -47,7 +47,7 @@ sudo install -m 0755 -d /etc/apt/keyrings
 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
 sudo chmod a+r /etc/apt/keyrings/docker.gpg
 
-# Add the repository to Apt sources:
+## Add the repository to Apt sources:
 echo \
   "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
   $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
@@ -77,7 +77,7 @@ sudo docker run hello-world
 ## Docker Files
 
 > [!NOTE]
-> [dockerfile](https://docs.docker.com/reference/dockerfile/) 
+> [dockerfile](https://docs.docker.com/reference/dockerfile/)
 >
 > Example rebuild for mkdocs with some mods
 >