descriptor: fix example name (#559)
Example_Options is an example on the Options type or function.
Example_options is an example on the package with a suffix of "options".
diff --git a/descriptor/descriptor_test.go b/descriptor/descriptor_test.go
index c546947..bf5174d 100644
--- a/descriptor/descriptor_test.go
+++ b/descriptor/descriptor_test.go
@@ -20,7 +20,7 @@
}
}
-func Example_Options() {
+func Example_options() {
var msg *tpb.MyMessageSet
_, md := descriptor.ForMessage(msg)
if md.GetOptions().GetMessageSetWireFormat() {
