fix(docs): fix a callout (#411)

* remove deleted section

* fix callout

Author: fhennig

docs/modules/spark-k8s/pages/usage-guide/job-dependencies.adoc

@@ -159,7 +159,7 @@ spec:
   mainApplicationFile: /app/run.py # <1>
   deps:
     requirements:
-      - tabulate==0.8.9  # <3>
+      - tabulate==0.8.9  # <2>
 ... 
 ----