fix precommit and fix redame install method

.pre-commit-config.yaml

@@ -9,15 +9,8 @@ repos:
       - id: check-merge-conflict
       - id: debug-statements
 
-  - repo: https://github.com/psf/black
-    rev: 24.1.1
-    hooks:
-      - id: black
-        language_version: python3
-
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.2.1
     hooks:
       - id: ruff
-        args: [--fix]
       - id: ruff-format

README.md

@@ -52,7 +52,11 @@ LEANN provides two installation methods: **pip install** (quick and easy) and **
 
 ### 🚀 Quick Install (Recommended for most users)
 
+Our project provides many **ready-to-use examples**. If you installed LEANN via pip, you can clone our examples and run them immediately:
+
 ```bash
+git clone git@github.com:yichuan-w/LEANN.git leann
+cd leann
 uv pip install leann
 ```
 
@@ -147,15 +151,6 @@ response = chat.ask(
 
 LEANN supports RAG on various data sources including documents (.pdf, .txt, .md), Apple Mail, Google Search History, WeChat, and more.
 
-Our project provides many **ready-to-use examples**. If you installed LEANN via pip, you can clone our examples and run them immediately:
-
-```bash
-git clone git@github.com:yichuan-w/LEANN.git leann
-cd leann
-```
-
-> **Note:** If you built from source, you already have the examples and can skip cloning.
-
 ### 📄 Personal Data Manager: Process Any Documents (.pdf, .txt, .md)!
 
 Ask questions directly about your personal PDFs, documents, and any directory containing your files!