fix(docs): merge duplicate API sections, standardize auth format

- Remove duplicate 'API Reference' section, merge curl examples into
  'API Endpoints' as 'Usage examples' subsection
- Standardize auth header to Bearer <YOUR_SECRET_TOKEN> placeholder
- Move License section to end of file

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: gkorland

README.md

@@ -242,43 +242,40 @@ A C analyzer exists in the source tree, but it is commented out and is not curre
 | POST | `/api/analyze_repo` | Clone and analyze a git repository |
 | POST | `/api/switch_commit` | Switch the indexed repository to a specific commit |
 
-## License
-
-This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
-
-## API Reference
-
-### Retrieve a graph
-
-Fetch graph entities from a repository:
+### Usage examples
 
+Fetch graph entities:
 ```bash
-curl -X GET "http://127.0.0.1:5000/api/graph_entities?repo=<REPO_NAME>" -H "Authorization: Bearer ${SECRET_TOKEN}"
+curl -X GET "http://127.0.0.1:5000/api/graph_entities?repo=<REPO_NAME>" \
+  -H "Authorization: Bearer <YOUR_SECRET_TOKEN>"
 ```
 
-Example:
-```bash
-curl -X GET "http://127.0.0.1:5000/api/graph_entities?repo=GraphRAG-SDK" -H "Authorization: Bearer ${SECRET_TOKEN}"
-```
-
-### Send Query
-
 Query your code graph using natural language:
-
 ```bash
-curl -X POST http://127.0.0.1:5000/api/chat -H "Content-Type: application/json" -d '{"repo": "<REPO_NAME>", "msg": "<YOUR_QUESTION>"}' -H "Authorization: Bearer ${SECRET_TOKEN}"
+curl -X POST http://127.0.0.1:5000/api/chat \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer <YOUR_SECRET_TOKEN>" \
+  -d '{"repo": "<REPO_NAME>", "msg": "<YOUR_QUESTION>"}'
 ```
 
-### Commit history
-
 List all commits:
 ```bash
-curl -X POST http://127.0.0.1:5000/api/list_commits -H "Content-Type: application/json" -d '{"repo": "<REPO_NAME>"}' -H "Authorization: Bearer ${SECRET_TOKEN}"
+curl -X POST http://127.0.0.1:5000/api/list_commits \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer <YOUR_SECRET_TOKEN>" \
+  -d '{"repo": "<REPO_NAME>"}'
 ```
 
 Switch to a specific commit:
 ```bash
-curl -X POST http://127.0.0.1:5000/api/switch_commit -H "Content-Type: application/json" -d '{"repo": "<REPO_NAME>", "commit": "<COMMIT_HASH>"}' -H "Authorization: Bearer ${SECRET_TOKEN}"
+curl -X POST http://127.0.0.1:5000/api/switch_commit \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer <YOUR_SECRET_TOKEN>" \
+  -d '{"repo": "<REPO_NAME>", "commit": "<COMMIT_HASH>"}'
 ```
 
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
 Copyright FalkorDB Ltd. 2025