Modify YAML syntax.

.drone.yml

@@ -11,19 +11,19 @@ steps:
 
   - name: hugo
     image: cibuilds/hugo:0.62.1
-    commands: >
-      if [ "${DRONE_BRANCH}" != "master" ]; then
-        hugo -e staging -v -s
-      else
-        hugo -e production -v -s
+    commands:
+      - if [ "${DRONE_BRANCH}" != "master" ]; then \
+        hugo -e staging -v -s \
+      else \
+        hugo -e production -v -s \
       fi
 
   - name: Compress-the-Assets
     image: cibuilds/hugo:0.62.1
     commands: >
-      for TARGET in `find public/ -type f | egrep "\.(css|js|png|jpg|JPG|PNG|CSS|JS)$"`
-      do
-        gzip -c ${TARGET} > ${TARGET}.gz
+      for TARGET in `find public/ -type f | egrep "\.(css|js|png|jpg|JPG|PNG|CSS|JS)$"` \
+      do \
+        gzip -c ${TARGET} > ${TARGET}.gz \
       done
 
 trigger: