Add documentation for RuneCountInString function

Author: Sawsqr68

.github/workflows/go.yml

@@ -0,0 +1,36 @@
+# 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 ./...
+      {
+  "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"
+}