Update license to GPL-3.0

Author: tuananhit1612

docs/documentation/content/license.mdx

@@ -1,41 +1,41 @@
 ---
 title: License
-description: Apache License 2.0
+description: GNU General Public License v3.0
 ---
 
 # License
 
-UrbanReflex is licensed under the **Apache License 2.0**.
+UrbanReflex is licensed under the **GNU General Public License v3.0 (GPL-3.0)**.
 
 ## Summary
 
-| Permission | Condition | Limitation |
-|------------|-----------|------------|
-| ✅ Commercial use | 📋 License notice | ❌ Trademark use |
-| ✅ Modification | 📋 State changes | ❌ Liability |
-| ✅ Distribution | | ❌ Warranty |
-| ✅ Patent use | | |
-| ✅ Private use | | |
+| Permission        | Condition          | Limitation   |
+| ----------------- | ------------------ | ------------ |
+| ✅ Commercial use | 📋 License notice  | ❌ Liability |
+| ✅ Modification   | 📋 State changes   | ❌ Warranty  |
+| ✅ Distribution   | 📋 Disclose source |              |
+| ✅ Patent use     | 📋 Same license    |              |
+| ✅ Private use    |                    |              |
 
 ## Copyright
 
 ```
 Copyright 2025 UrbanReflex Contributors
 
-Licensed under the Apache License, Version 2.0
-http://www.apache.org/licenses/LICENSE-2.0
+Licensed under the GNU General Public License v3.0
+https://www.gnu.org/licenses/gpl-3.0.html
 ```
 
 ## Third-Party Licenses
 
-| Project | License |
-|---------|---------|
-| FastAPI | MIT |
-| Next.js | MIT |
-| MongoDB | SSPL |
-| Orion-LD | AGPL-3.0 |
-| React | MIT |
-| Tailwind CSS | MIT |
+| Project      | License  |
+| ------------ | -------- |
+| FastAPI      | MIT      |
+| Next.js      | MIT      |
+| MongoDB      | SSPL     |
+| Orion-LD     | AGPL-3.0 |
+| React        | MIT      |
+| Tailwind CSS | MIT      |
 
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