chore: update docs build.ps1 (#1299)

* chore: update docs build.ps1

Signed-off-by: DRAGON <anantvijay3@gmail.com>

* Fix build.ps1 for CI

Signed-off-by: Songlin Jiang <songlin.jiang@csc.fi>

---------

Signed-off-by: DRAGON <anantvijay3@gmail.com>
Signed-off-by: Songlin Jiang <songlin.jiang@csc.fi>
Co-authored-by: Songlin Jiang <songlin.jiang@csc.fi>

.github/workflows/b-binary-build-and-e2e-tests.yaml

@@ -195,8 +195,8 @@ jobs:
         if: matrix.os == 'ubuntu-20.04' && matrix.arch != ''
 
       - name: Install MSYS2 & libgit2 (Windows)
-        shell: cmd
-        run: .\build.bat all
+        shell: pwsh
+        run: .\build.ps1 all
         if: matrix.os == 'windows-latest'
 
       - name: Install pkg-config (macOS)