nvim: fix comment

Signed-off-by: Koichi Shiraishi <zchee.io@gmail.com>

Author: zchee

nvim/api_test.go

@@ -449,7 +449,7 @@ func testBuffer(v *Nvim) func(*testing.T) {
 }
 
 t.Cleanup(func() {
-// cleanup cindent option
+// cleanup buffer name
 if err := v.SetBufferName(Buffer(0), ""); err != nil {
 t.Fatal(err)
 }
@@ -707,7 +707,7 @@ func testBuffer(v *Nvim) func(*testing.T) {
 }
 
 t.Cleanup(func() {
-// cleanup cindent option
+// cleanup buffer name
 b.SetBufferName(Buffer(0), "")
 if err := b.Execute(); err != nil {
 t.Fatal(err)