fix: typo breaking GHA

Author: oesteban

.github/workflows/docs-build-update.yml

@@ -47,7 +47,7 @@ jobs:
       if: startsWith(github.ref, 'refs/tags/')
       run: |
           MAJOR_MINOR=${CURBRANCH%.*}
-          if [[ "${MAJOR_MINOR" == "" ]]; then
+          if [[ "${MAJOR_MINOR}" == "" ]]; then
               echo "Could not identify release series"
               exit 1
           fi
@@ -63,7 +63,7 @@ jobs:
     - name: Push "master" docs to gh-pages after a PR is merged
       if: github.event.pull_request.merged == true
       run: |
-          if [[ "${CURBRANCH" != "master" ]]; then
+          if [[ "${CURBRANCH}" != "master" ]]; then
               echo "$CURBRANCH is not the default development branch"
               exit 1
           fi