docs: fix version, @v0 doesn't work

Author: jirfag

README.md

@@ -27,7 +27,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v0
+        uses: golangci/golangci-lint-action@v0.1.8
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
           version: v1.26