add benchmark func for GitHubEmojiLink

Author: LinuxSuRen

Makefile

@@ -6,4 +6,4 @@ copy: build
 test:
 	go test ./...
 benchmark:
-	go test -benchmem -run=^$$ -bench ^BenchmarkGetTopN$$ github.com/linuxsuren/yaml-readme/function
+	go test -benchmem -run=^$$ -bench ^*$$ github.com/linuxsuren/yaml-readme/function

function/github_test.go

@@ -418,3 +418,9 @@ func BenchmarkGetTopN(b *testing.B) {
 		getTopN(items, 3)
 	}
 }
+
+func BenchmarkGitHubEmojiLink(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		GitHubEmojiLink("linuxsuren")
+	}
+}