docs(usage): Update readme.md

readme.md

@@ -2,6 +2,12 @@
 
 # My Hearts of Iron IV Mods Archive
 
+## Usage
+
+- Download the desired mod folder to the Hearts of Iron IV mod directory (usually located at `Documents/Paradox Interactive/Hearts of Iron IV/mod`).
+- Copy the `mod name.mod` file from the desired mod folder into the `mod/`
+    * Note that `descriptor.mod` should be kept in the original mod folder.
+
 ## [\[NCNS\] Remove PRC Late-Game Focus Exclusivity](./prc-remove-lategame-exclusive/)
 
 
@@ -9,7 +15,7 @@ Remove the mutual exclusivity between the PRC National Focuses: 'Avenge the Cent
 
 ![Preview](./_assets/prc-remove-lategame-exclusive-1.jpg)
 
-## Use the name "Republic of China" for all ideologies
+## [Use the name "Republic of China" for all ideologies](./roc-naming/)
 
 Replace Soong Ching-ling's and Dai Li's "Chinese People's State" with "Republic of China", compatible with all languages and should be compatible with newer versions.
 

readme_CN.md

@@ -4,6 +4,12 @@
 
 个人钢丝模组存档
 
+## 使用说明
+
+- 下载所需模组文件夹至钢铁雄心 IV 的 mod 目录下（通常位于「文档/Paradox Interactive/Hearts of Iron IV/mod」）。
+- 将所需模组文件夹内的 `模组名.mod` 文件复制 `mod/` 文件夹中。
+    * 注意 `descriptor.mod` 文件应保留在原模组文件夹内。
+
 ## [\[抗战到底\] 移除PRC最终国策互斥](./prc-remove-lategame-exclusive/)
 
 移除 PRC 国策中：
@@ -12,7 +18,7 @@
 
 ![Preview](./_assets/prc-remove-lategame-exclusive-1.jpg)
 
-## 中国国名始终为「中华民国」
+## [中国国名始终为「中华民国」](./roc-naming/)
 
 将宋庆龄和戴笠中国的「中华人民国」改为「中华民国」， 兼容所有语言，理论上兼容未来所有版本。