update GitHub actions and Readme

Author: nathany

.github/workflows/build.yml

@@ -7,14 +7,14 @@ jobs:
     name: Build and Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-go@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v3
         with:
-          go-version: '1.16.0-rc1'
-          stable: false
+          go-version: 'stable'
+          check-latest: true
       - name: Lint
         run: |
-          go get -u golang.org/x/lint/golint
+          go install golang.org/x/lint/golint
           golint ./...
       - name: Vet
         run: |

README.md

@@ -1,6 +1,6 @@
 # Get Programming with Go
 
-![Build and Test](https://github.com/nathany/get-programming-with-go/workflows/Build%20and%20Test/badge.svg)
+![Build and Test](https://github.com/nathany/get-programming-with-go/actions/workflows/build.yml/badge.svg)
 
 Available from Manning Publications [https://www.manning.com/books/get-programming-with-go](https://www.manning.com/books/get-programming-with-go?utm_source=nathany&utm_medium=affiliate&utm_campaign=book_youngman_get_9_17_18&a_aid=nathany&a_bid=53f68821).
 
@@ -10,4 +10,4 @@ If you downloaded this code from the Manning website, you can browse the latest
 
 ### Contributing
 
-Feel free to open an issue or ask questions on the Manning LiveBook: https://forums.manning.com/forums/get-programming-with-go.
+Feel free to open an issue or ask questions on the Manning liveBook: https://forums.manning.com/forums/get-programming-with-go.