Fix callout numbers and commit ref for ch10l005

Author: ttiikeri

chapter_10_production_readiness.asciidoc

@@ -351,7 +351,7 @@ TIP: Itamar Turner-Traurig has a great guide to
 
 Now let's see how we use that requirements file in our Dockerfile:
 
-.Dockerfile (ch09l005)
+.Dockerfile (ch10l005)
 ====
 [source,dockerfile]
 ----
@@ -371,9 +371,9 @@ CMD python manage.py runserver
 ----
 ====
 
-<3> We COPY our requirements file in, just like the src folder.
+<1> We COPY our requirements file in, just like the src folder.
 
-<4> Now instead of just installing Django, we install all our dependencies
+<2> Now instead of just installing Django, we install all our dependencies
   by pointing pip at the _requirements.txt_ using the `-r` flag.
   Notice the `-r`.