Minor fixes after removal of prodtype

docs/manual/developer/03_creating_content.md

@@ -736,6 +736,9 @@ between XCCDF rules which directly implement the given controls (represented by
 The `rules` and `related_rules` keys consist of a list of rule IDs and variable
 selections.
 
+If a rule needs to be chosen only in some of the products we can use Jinja macros
+inside the controls file to choose products.
+
 After we finish our analysis, we will insert our findings to the controls file,
 the file will look like this:
 

tests/ssg_test_suite/common.py

@@ -314,7 +314,7 @@ def load_rule_and_env(rule_dir_path, env_yaml, product=None):
     local_env_yaml.update(env_yaml)
     local_env_yaml['rule_id'] = rule.id_
     local_env_yaml['rule_title'] = rule.title
-    local_env_yaml["products"] = {product}
+    local_env_yaml['products'] = {product}
 
     return rule, local_env_yaml