[Docs] Add dependency notice (#15365)

* Add dependency notice

* Fix typo

* Update doc

* Add PaddleOCR and PaddleX version correspondance

* Use independant sentence

* Add 3.0.1

docs/update/upgrade_notes.md

@@ -56,7 +56,7 @@ from paddleocr import PaddleOCR
 # 基础的初始化参数保持一致
 ocr = PaddleOCR(lang="en")
 result = ocr.ocr("img.png")
-# 也可以使用新的统接口
+# 也可以使用新的统一接口
 # result = ocr.predict("img.png")
 for res in result:
     # 可直接调用方法打印识别结果，无需嵌套循环

docs/version3.x/paddleocr_and_paddlex.en.md

@@ -16,6 +16,15 @@ PaddleOCR fully reuses the capabilities of PaddleX in the inference deployment p
 - The high-performance inference capabilities of PaddleOCR are achieved through PaddleX's Paddle2ONNX plugin and high-performance inference plugins.
 - The service deployment solutions of PaddleOCR are based on PaddleX's implementations.
 
+It is important to note that although PaddleOCR uses PaddleX at the underlying level, thanks to PaddleX’s optional dependency installation feature, **installing the PaddleOCR inference package does not include all of PaddleX’s dependencies—only those required for OCR-related tasks are installed**. Therefore, users generally do not need to worry about excessive expansion of dependency size. Tested in May 2025, in an x86-64 + Linux + Python 3.10 environment, the total size of required dependencies increased only from 717 MB to 738 MB.
+
+The version correspondence between PaddleOCR and PaddleX is as follows:
+
+| PaddleOCR Version | PaddleX Version |
+| --- | --- |
+| `3.0.0` | `3.0.0` |
+| `3.0.1` | `3.0.1` |
+
 ## 2. Correspondence Between PaddleOCR Pipelines and PaddleX Pipeline Registration Names
 
 | PaddleOCR Pipeline | PaddleX Pipeline Registration Name |

docs/version3.x/paddleocr_and_paddlex.md

@@ -16,6 +16,15 @@ PaddleOCR 在推理部署环节充分复用了 PaddleX 的能力，具体包括
 - PaddleOCR 的高性能推理能力通过 PaddleX 的 Paddle2ONNX 插件及高性能推理插件实现。
 - PaddleOCR 的服务化部署方案基于 PaddleX 的实现。
 
+需要特别说明的是，尽管 PaddleOCR 在底层使用了 PaddleX，但得益于 PaddleX 的可选依赖安装功能，**安装 PaddleOCR 推理包时并不会安装 PaddleX 的全部依赖，而只会安装 OCR 类任务需要使用到的依赖**，用户通常无需关心依赖体积的过度膨胀问题。2025 年 5 月测试，在 x86-64 + Linux + Python 3.10 环境中，需要安装的依赖总体积仅仅从 717 MB 增加到 738 MB。
+
+PaddleOCR 和 PaddleX 的版本存在如下对应关系：
+
+| PaddleOCR 版本 | PaddleX 版本 |
+| --- | --- |
+| `3.0.0` | `3.0.0` |
+| `3.0.1` | `3.0.1` |
+
 ## 2. PaddleOCR 产线与 PaddleX 产线注册名的对应关系
 
 | PaddleOCR 产线 | PaddleX 产线注册名 |