docs: fix docstring formatting (#581)

Committer: @parthea
PiperOrigin-RevId: 410919520
Source-Link: googleapis/googleapis@b5274f7
Source-Link: https://github.com/googleapis/googleapis-gen/commit/a179eefb3b32897d75c53d8349f23910c7753050
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See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Benjamin E. Coe <bencoe@google.com>

Author: gcf-owl-bot[bot]

protos/google/cloud/tasks/v2/target.proto

@@ -83,8 +83,8 @@ message HttpRequest {
   //   [HttpRequest.url][google.cloud.tasks.v2.HttpRequest.url].
   // * Content-Length: This will be computed by Cloud Tasks.
   // * User-Agent: This will be set to `"Google-Cloud-Tasks"`.
-  // * X-Google-*: Google use only.
-  // * X-AppEngine-*: Google use only.
+  // * `X-Google-*`: Google use only.
+  // * `X-AppEngine-*`: Google use only.
   //
   // `Content-Type` won't be set by Cloud Tasks. You can explicitly set
   // `Content-Type` to a media type when the

protos/google/cloud/tasks/v2beta3/target.proto

@@ -105,8 +105,8 @@ message HttpRequest {
   //   [HttpRequest.url][google.cloud.tasks.v2beta3.HttpRequest.url].
   // * Content-Length: This will be computed by Cloud Tasks.
   // * User-Agent: This will be set to `"Google-Cloud-Tasks"`.
-  // * X-Google-*: Google use only.
-  // * X-AppEngine-*: Google use only.
+  // * `X-Google-*`: Google use only.
+  // * `X-AppEngine-*`: Google use only.
   //
   // `Content-Type` won't be set by Cloud Tasks. You can explicitly set
   // `Content-Type` to a media type when the