Fix Makefile syntax

Makefile

@@ -8,32 +8,32 @@ GO_FILES := $(shell find . -name '*.go' | grep -v /vendor/ | grep -v _test.go)
 all: build
 
 lint:
-  @golint -set_exit_status ${PKG_LIST}
+	@golint -set_exit_status ${PKG_LIST}
 
 test:
-  @go test -short ${PKG_LIST}
+	@go test -short ${PKG_LIST}
 
 race: dep
-  @go test -race -short ${PKG_LIST}
+	@go test -race -short ${PKG_LIST}
 
 msan: dep
-  @go test -msan -short ${PKG_LIST}
+	@go test -msan -short ${PKG_LIST}
 
 coverage:
-  ./tools/coverage.sh;
+	./tools/coverage.sh;
 
 coverhtml:
-  ./tools/coverage.sh html;
+	./tools/coverage.sh html;
 
 dep:
-  @go get -v -d ./...
-  @go get github.com/mitchellh/gox
+	@go get -v -d ./...
+	@go get github.com/mitchellh/gox
 
 build: dep
-  @gox -output="eth-log-alerting-builds/{{.Dir}}_{{.OS}}_{{.Arch}}" -parallel=4
+	@gox -output="eth-log-alerting-builds/{{.Dir}}_{{.OS}}_{{.Arch}}" -parallel=4
 
 clean:
-  @rm -f $(PROJECT_NAME)
+	@rm -f $(PROJECT_NAME)
 
 help:
-  @grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+	@grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'