remove anchor from github workflows

.github/workflows/build_and_test.yml

@@ -3,23 +3,25 @@ name: Build and test
 on:
   push:
     branches: [ master ]
-    paths-ignore: &paths
+    paths-ignore:
       - "docs/**"
       - "settings.sample.yaml"
       - "README.md"
       - "LICENSE"
   pull_request:
     branches: [ master ]
-    paths-ignore: *paths
+    paths-ignore:
+      - "docs/**"
+      - "settings.sample.yaml"
+      - "README.md"
+      - "LICENSE"
 
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v2
       - name: Build