Refactor GitLab CI stages and fix example IP address in CfDnsClient documentation

.gitlab-ci.yml

@@ -83,7 +83,7 @@ javadoc:
         git commit -m "Update Javadocs [skip ci]"
         git push https://${GITLAB_USERNAME}:${CI_PUSH_TOKEN}@gitlab.com/th-schwarz/CloudflareDNS-java.git ${CI_COMMIT_REF_NAME}
         echo "Commits found and pushed"
-        mkdir public
+        [ ! -d public ] && mkdir public || echo "Directory 'public' already exists"
         cp -r docs/* public/
         echo "Copied javadoc files to public folder"
       else

src/main/java/codes/thischwa/cf/CfDnsClient.java

@@ -33,7 +33,7 @@ import lombok.extern.slf4j.Slf4j;
  *     System.out.println("Record Type: " + record.getType() + ", Value: " + record.getContent())
  * );
  * // Create a record for the subdomain "api"
- * RecordEntity created = client.recordCreateSld(zone, "api", 60, RecordType.A, "192.168.1.8");
+ * RecordEntity created = client.recordCreateSld(zone, "api", 60, RecordType.A, "192.168.1108");
  * System.out.println("Created Record ID: " + created.getId());
  * </code></pre>
  */