Change italics to bold

Author: Dana Singh

docs/usage/yaml_dev/pp_yaml.rst

@@ -1,6 +1,6 @@
 The post-processing yamls include information specific to experiments, such as component information. The post-processing yamls can further define more ``fre_properties`` that may be experiment specific. If there are any repeated reusable variables, the ones set in this yaml will overwrite those set in the model yaml.
 
-*Post-processing yamls*
+**Post-processing yamls**
 
 The post-processing yamls include pp experiment yamls, along with a settings.yaml, that can be applied to all pp yamls. Users can add however many components are needed, as well as define any experiment specific `fre_properties`. The pp experiment yamls can follow the structure below:
 
@@ -29,7 +29,7 @@ Required keys include:
     - sources
     - postprocess_on
 
-*Settings yaml*
+**Settings yaml**
 
 To define post-processing settings, a settings.yaml must also be created. This configuration file will include post-processing settings and switches and will be listed as the **first** yaml under the `pp` section of `experiments`.