[ci] update docs_build.yaml (#18591)

Author: blinkov

.github/workflows/docs_build.yaml

@@ -17,7 +17,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Build
-        uses: diplodoc-platform/docs-build-action@v3.1.9
+        uses: diplodoc-platform/docs-build-action@v3
         with:
           revision: "pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}"
           src-root: "./ydb/docs"