Minor grammatical fix (#2347)

* Minor grammatical fix

* Another minor correction

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

website_docs/getting-started.md

@@ -39,7 +39,7 @@ import (
 	"log"
 )
 
-// App is an Fibonacci computation application.
+// App is a Fibonacci computation application.
 type App struct {
 	r io.Reader
 	l *log.Logger
@@ -296,7 +296,7 @@ To initialize the console exporter, add the following function to the `main.go`
 func newExporter(w io.Writer) (trace.SpanExporter, error) {
 	return stdouttrace.New(
 		stdouttrace.WithWriter(w),
-		// Use human readable output.
+		// Use human-readable output.
 		stdouttrace.WithPrettyPrint(),
 		// Do not print timestamps for the demo.
 		stdouttrace.WithoutTimestamps(),