Fix document of debezium
### Motivation
There are some typos in the document content of about debezium, which affect users' use, so fix it.
### Modifications
Fix typos in document of debezium. And format content
@@ -57,7 +57,7 @@ Here is a JSON configuration example:
Optionally, you can create a `debezium-mysql-source-config.yaml` file, and copy the [contents](https://github.com/apache/pulsar/blob/master/pulsar-io/debezium/mysql/src/main/resources/debezium-mysql-source-config.yaml) below to the `debezium-mysql-source-config.yaml` file.
```$yaml
-tenant: "pubilc"
+tenant: "public"
namespace: "default"
name: "debezium-mysql-source"
topicName: "debezium-mysql-topic"
