Fetch complete git history to correctly set "updated by" texts

Author: cmfcmf

.github/workflows/main.yml

@@ -8,6 +8,8 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@master
+      with:
+        fetch-depth: 0 # fetch complete history so that the "last updated by" texts can be set correctly
     - name: Use Node.js 10.x
       uses: actions/setup-node@v1
       with:
@@ -27,4 +29,4 @@ jobs:
         PUBLISH_DIR: ./docs/build
       with:
         emptyCommits: false
-        keepFiles: false
+        keepFiles: false