fix specify dir

Author: JalinWang

.github/workflows/05-windows-build.yml

@@ -86,7 +86,7 @@ jobs:
           $env:CMAKE_BUILD_PARALLEL_LEVEL = "1"
           python -m pip install -v . `
             --no-build-isolation `
-            --config-settings='cmake.define.BUILD_TOOLS=ON' \
+            --config-settings='cmake.define.BUILD_TOOLS=ON' `
             -Cbuild-dir='C:\actions-runner\_work\zvec\build_ci'
         shell: powershell