update golangci-lint version (#95)

* update golangci-lint version

* make lint pass

Author: mmou

.circleci/config.yml

@@ -24,7 +24,7 @@ jobs:
       - run: go get golang.org/x/tools/cmd/goimports
       - run: "! goimports ./... 2>&1 | read"
       - run: "! go mod tidy ./... 2>&1 | read"
-      - run: go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.17.1
+      - run: go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.25.0
       - run: "! golangci-lint 2>&1 | read"
   sphinx-build:
     docker: