Fix broken circleci deploy due to extra space in tag (#1502)

* Fix broken circleci deploy due to extra space in tag

* Minor formatting nits in bash sections

.circleci/config.yml

@@ -160,8 +160,8 @@ jobs:
             PATH="venv/bin:$PATH" script/generate_docs \
                 --output_dir=generated_docs/
             cd generated_docs/
-           mkdocs gh-deploy -m "[ci skip] Deployed
-            {sha} with MkDocs version: {version}"
+            mkdocs gh-deploy \
+              -m "[ci skip] Deployed {sha} with MkDocs version: {version}"
   deploy:
     parameters:
       image:
@@ -178,7 +178,6 @@ jobs:
           command:
           # yamllint disable-line rule:line-length
             echo 'IMAGE="${CIRCLE_PROJECT_USERNAME+$CIRCLE_PROJECT_USERNAME/}${CIRCLE_PROJECT_REPONAME:-bigquery-etl}:${CIRCLE_TAG:-latest}"' > $BASH_ENV
-
       - run:
           name: Build docker image
           command: docker build . --pull --tag "$IMAGE"