Update example for overriding the ref macro (#5052)

## What are you changing in this pull request and why?

While working on #5051,
I saw some other opportunities for improvement and split them into their
own stand-alone PR.

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
so my content adheres to these guidelines.

website/docs/reference/dbt-jinja-functions/builtins.md

@@ -22,23 +22,27 @@ Using the `builtins` variable in this way is an advanced development workflow. U
 :::
 
 <VersionBlock firstVersion="1.5">
-
-From dbt v1.5 and higher, use the following macro to extract user-provided arguments, including <code>version</code>, and call the <code>builtins.ref()</code> function with either a single <code>modelname</code> argument or both <code>packagename</code> and <code>modelname</code> arguments, based on the number of positional arguments in <code>varargs</code>:
+
+From dbt v1.5 and higher, use the following macro to override the `ref` method available in the model compilation context to return a [Relation](/reference/dbt-classes#relation) with the database name overriden to `dev`.
+
+It includes logic to extract user-provided arguments, including <code>version</code>, and call the <code>builtins.ref()</code> function with either a single <code>modelname</code> argument or both <code>packagename</code> and <code>modelname</code> arguments, based on the number of positional arguments in <code>varargs</code>.
 
 <br /><br />
 
 
 ```
 {% macro ref() %}
+
 -- extract user-provided positional and keyword arguments
-  {% set version = kwargs.get('version') or kwargs.get('v') %}
-  {% set packagename = none %}
-  {%- if (varargs | length) == 1 -%}
+{% set version = kwargs.get('version') or kwargs.get('v') %}
+{% set packagename = none %}
+{%- if (varargs | length) == 1 -%}
     {% set modelname = varargs[0] %}
 {%- else -%}
     {% set packagename = varargs[0] %}
     {% set modelname = varargs[1] %}
 {% endif %}
+
 -- call builtins.ref based on provided positional arguments
 {% set rel = None %}
 {% if packagename is not none %}
@@ -71,14 +75,10 @@ From dbt v1.4 and lower, use the following macro to override the `ref` method av
 ```
 </VersionBlock>
 
-The ref macro can also be used to control which elements of the model path are rendered when run, for example the following macro overrides the `ref` method to render only the schema and object identifier, but not the database reference i.e. `my_schema.my_model` rather than `my_database.my_schema.my_model`. This is especially useful when using snowflake as a warehouse, if you intend to change the name of the database post-build and wish the references to remain accurate.
+Logic within the ref macro can also be used to control which elements of the model path are rendered when run, for example the following logic renders only the schema and object identifier, but not the database reference i.e. `my_schema.my_model` rather than `my_database.my_schema.my_model`. This is especially useful when using snowflake as a warehouse, if you intend to change the name of the database post-build and wish the references to remain accurate.
 
 ```
--- Macro to override ref and to render identifiers without a database.
 
-{% macro ref(model_name) %}
-
-  {% do return(builtins.ref(model_name).include(database=false)) %}
-
-{% endmacro %}
+  -- render identifiers without a database
+  {% do return(rel.include(database=false)) %}
 ```