docs(dialogflow): Minor formatting (#8376)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 553461544

Source-Link: https://togithub.com/googleapis/googleapis/commit/347e81de5db1ac895f36d99cb0af7dfbb8d5bdab

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/1177b663de50079dbcfcbb7eebe99c7ee21ca074
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMTE3N2I2NjNkZTUwMDc5ZGJjZmNiYjdlZWJlOTljN2VlMjFjYTA3NCJ9
BEGIN_NESTED_COMMIT
feat(datacatalog): add support for admin_search in SearchCatalog() API method
PiperOrigin-RevId: 553406785

Source-Link: https://togithub.com/googleapis/googleapis/commit/ce38ea0f9264e8b72e7fefb4971cb4501d2c8582

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/cbd7291e1e4389185dd58ace2dbaad55dea04c77
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiY2JkNzI5MWUxZTQzODkxODVkZDU4YWNlMmRiYWFkNTVkZWEwNGM3NyJ9
END_NESTED_COMMIT