Fix command syntax in documentation deployment scripts

Author: fmbenhassine

.github/workflows/continuous-integration-51x.yml

@@ -55,5 +55,5 @@ jobs:
         working-directory: spring-batch-docs/target
         run: |
           unzip spring-batch-$PROJECT_VERSION-javadocs.zip
-          ssh -i $HOME/.ssh/key $DOCS_USERNAME@$DOCS_HOST cd $DOCS_PATH && mkdir -p $PROJECT_VERSION/api
+          ssh -i $HOME/.ssh/key $DOCS_USERNAME@$DOCS_HOST "cd $DOCS_PATH && mkdir -p $PROJECT_VERSION/api"
           scp -i $HOME/.ssh/key -r api $DOCS_USERNAME@$DOCS_HOST:$DOCS_PATH/$PROJECT_VERSION/api

.github/workflows/documentation-upload.yml

@@ -57,7 +57,7 @@ jobs:
         working-directory: spring-batch-docs/target
         run: |
           unzip spring-batch-$RELEASE_VERSION-javadocs.zip
-          ssh -i $HOME/.ssh/key $DOCS_USERNAME@$DOCS_HOST cd $DOCS_PATH && mkdir -p $RELEASE_VERSION/api
+          ssh -i $HOME/.ssh/key $DOCS_USERNAME@$DOCS_HOST "cd $DOCS_PATH && mkdir -p $RELEASE_VERSION/api"
           scp -i $HOME/.ssh/key -r api $DOCS_USERNAME@$DOCS_HOST:$DOCS_PATH/$RELEASE_VERSION/api
           
           unzip spring-batch-$RELEASE_VERSION-schemas.zip