Add documentation for RuneCountInString function #1

	# This workflow will build a golang project
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go

	name: Go

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	jobs:

	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.20'

	- name: Build
	run: go build -v ./...

	- name: Test
	run: go test -v ./...
	{
Check failure on line 29 in .github/workflows/go.yml View workflow run for this annotation GitHub Actions / .github/workflows/go.yml Invalid workflow file `You have an error in your yaml syntax on line 29`
	"name": "RuneCountInString",
	"import": "unicode/utf8",
	"pkg": "utf8",
	"decl": "func RuneCountInString(s string) (n int)",
	"doc": "RuneCountInString is like RuneCount but its input is a string.\n",
	"pos": "/usr/local/Cellar/go/1.9/libexec/src/unicode/utf8/utf8.go:412:6"
	}

Provide feedback