[Docs] Fix broken markdown formatting, leaked reviewer prompt, and outdated URLs in tutorial.md

### Problem Description
In `guides/tutorial.md`, recent commits introduced formatting corruptions and left outdated setup instructions:

1. **Prompt Artifact Leakage & Broken Code Fences**: Lines 86–125 contain unclosed ` ```sql ` and ` ```java ` code fences, along with raw reviewer prompts accidentally committed into the text:
- `## 👉 Step 2 — Improve SQL execution step`
- `Below this:`
- ` ```md `
- The final Java code example at EOF is missing its closing fence.
2. **Deprecated Incubator Clone URLs**: Lines 23 and 29 instruct users to clone `https://github.com/apache/incubator-wayang.git` and `cd incubator-wayang`, which is obsolete following Wayang's graduation.
3. **Stale Snapshot References**: References to `wayang-assembly-1.1.1-SNAPSHOT-dist.tar.gz` and `wayang-1.0.1-SNAPSHOT` do not match the current project version (`1.1.2-SNAPSHOT`).

### Proposed Solution
- Remove the prompt artifact text and properly format/close all SQL and Java code blocks.
- Update repository URLs to `https://github.com/apache/wayang.git` and `cd wayang`.
- Sync snapshot version strings to `1.1.2-SNAPSHOT`.

Start in guides/tutorial.md, especially lines 23, 29, and 86–125, and inspect the final Java example for fence closure. Remove the leaked reviewer prompts, close the SQL and Java fences, update the repository path and clone command, and change snapshot references to 1.1.2-SNAPSHOT. Done means the tutorial renders correctly and all setup instructions match the current project.

Written by the indexing model from the issue text.