docs: fix typos (#850)

* docs: fix typos

PiperOrigin-RevId: 387960382

Source-Link: googleapis/googleapis@41521e2

Source-Link: googleapis/googleapis-gen@70fa757

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/master/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]

packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/validation_result.proto

@@ -65,7 +65,7 @@ message ValidationError {
   // associated with certain entities.
   repeated string entries = 3;
 
-  // The detailed error messsage.
+  // The detailed error message.
   string error_message = 4;
 }
 

packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/validation_result.proto

@@ -65,7 +65,7 @@ message ValidationError {
   // associated with certain entities.
   repeated string entries = 3;
 
-  // The detailed error messsage.
+  // The detailed error message.
   string error_message = 4;
 }