Update build-astro workflow to use ci:build:doc-core script

Author: wise-king-sullyman

.github/workflows-src/partials/build-astro.yml

@@ -9,5 +9,5 @@
   with:
     path: "packages/documentation-site/.cache"
     key: ${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-- run: yarn build:doc-core
+- run: yarn ci:build:doc-core
   name: Build astro docs