gitlab-ci.yml: update location of docs in the manifest

The docs repository is now checked out in the root of the workspace, not
under sources/docs

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>

.gitlab-ci.yml

@@ -55,7 +55,7 @@ reuse:
     - ( cd "$SCRATCH_DIR"/sources/"$OHOS_GIT_REPO_PATH" && git checkout "$CI_COMMIT_SHA" )
   script: &doc-workspace-do
     - SCRATCH_DIR="$(cat "$CI_PROJECT_DIR"/.scratch-dir-name)"
-    - cd "$SCRATCH_DIR"/sources/docs
+    - cd "$SCRATCH_DIR"/docs
     # Aggregate content from other places
     - make -C experimental aggregate