fix: Add paths-ignore for markdown and docs in workflow

Author: linkdotnet

.github/workflows/dotnet.yml

@@ -3,8 +3,14 @@ name: dotnet
 on:
   push:
     branches: [ master ]
+    paths-ignore:
+      - "**/*.md"
+      - "docs/**"
   pull_request:
     branches: [ master ]
+    paths-ignore:
+      - "**/*.md"
+      - "docs/**"
 
 concurrency:
   group: dotnet-${{ github.ref }}-1