orb: fix install go toolchain on darwin

src/@orb.yml

@@ -10,30 +10,30 @@ display:
 executors:
   linux:
     parameters:
-      tag:
-        description: "The tag to use on the golang debian image for linux platform."
+      version:
+        description: "The Go version to use on the golang debian image for linux platform."
         type: string
         default: "1.15-buster"
       shell:
         description: "Shell to use for execution command."
         type: string
         default: "/bin/bash -eu -o pipefail"
     docker:
-      - image: "golang:<< parameters.tag >>"
+      - image: "golang:<< parameters.version >>"
     shell: "<< parameters.shell >>"
 
   alpine:
     parameters:
-      tag:
-        description: "The tag to use on the golang alpine image for linux platform."
+      version:
+        description: "The Go version to use on the golang alpine image for linux platform."
         type: string
         default: "1.15-alpine"
       shell:
         description: "Shell to use for execution command."
         type: string
         default: "/bin/ash -eu -o pipefail"
     docker:
-      - image: "golang:<< parameters.tag >>"
+      - image: "golang:<< parameters.version >>"
     shell: '<< parameters.shell >>'
 
   macos:

src/commands/install.yml

@@ -27,7 +27,7 @@ steps:
 
           darwin)
             curl -sSL https://golang.org/dl/go<< parameters.version >>.${goos}-amd64.tar.gz | sudo tar -xzf - -C << parameters.path >>
-            sudo chown distiller:admin << parameters.path >>/go
+            sudo chown ${USER}:admin << parameters.path >>/go
             ;;
 
           *)