typo: 优化依赖更新

.gitattributes

@@ -0,0 +1,2 @@
+*.bat text eol=crlf
+*.cmd text eol=crlf

run_windows.bat

@@ -47,12 +47,13 @@ if not exist "venv\" (
 
     call venv\Scripts\activate.bat
 
-    echo 正在安装依赖...
-    pip install -r requirements.txt
 ) else (
     call venv\Scripts\activate.bat
 )
 
+echo 正在更新依赖...
+pip install -r requirements.txt
+
 echo 当前代理设置：
 echo HTTP_PROXY=%HTTP_PROXY%
 echo HTTPS_PROXY=%HTTPS_PROXY%