fixed sed error + deliveries extension is tar.gz

Makefile

@@ -1,8 +1,8 @@
 VERSION := "3.2.0"
 DIST := $(CURDIR)/_dist
 LDFLAGS := "-X main.version=${VERSION}"
-TAR_LINUX := "helm-spray-linux-amd64.tgz"
-TAR_WINDOWS := "helm-spray-windows-amd64.tgz"
+TAR_LINUX := "helm-spray-linux-amd64.tar.gz"
+TAR_WINDOWS := "helm-spray-windows-amd64.tar.gz"
 BINARY_LINUX := "helm-spray"
 BINARY_WINDOWS := "helm-spray.exe"
 
@@ -14,12 +14,12 @@ dist_linux:
 	mkdir -p $(DIST)
 	GOOS=linux GOARCH=amd64 go get -t -v ./...
 	GOOS=linux GOARCH=amd64 go build -o $(BINARY_LINUX) -ldflags $(LDFLAGS) main.go
-	sed -e "s/:VERSION:/$VERSION/g" -e "s/:BINARY:/$BINARY_LINUX/g" plugin.yaml.template > plugin.yaml
-	tar -czvf $(DIST)/${TAR_LINUX} $(BINARY_LINUX) README.md LICENSE plugin.yaml
+	sed -e "s/:VERSION:/$(VERSION)/g" -e "s/:BINARY:/$(BINARY_LINUX)/g" plugin.yaml.template > plugin.yaml
+	tar -czvf $(DIST)/$(TAR_LINUX) $(BINARY_LINUX) README.md LICENSE plugin.yaml
 
 .PHONY: dist_windows
 dist_windows:
 	GOOS=windows GOARCH=amd64 go get -t -v ./...
 	GOOS=windows GOARCH=amd64 go build -o $(BINARY_WINDOWS) -ldflags $(LDFLAGS) main.go
-	sed -e "s/:VERSION:/$VERSION/g" -e "s/:BINARY:/$BINARY_WINDOWS/g" plugin.yaml.template > plugin.yaml
+	sed -e "s/:VERSION:/$(VERSION)/g" -e "s/:BINARY:/$(BINARY_WINDOWS)/g" plugin.yaml.template > plugin.yaml
 	tar -czvf $(DIST)/${TAR_WINDOWS} $(BINARY_WINDOWS) README.md LICENSE plugin.yaml