Callout snippet for properties and configs (#4439)

### Previews
- [Source
properties](https://docs-getdbt-com-git-dbeatty-config-properties-callout-dbt-labs.vercel.app/reference/source-properties)
- [Exposure
properties](https://docs-getdbt-com-git-dbeatty-config-properties-callout-dbt-labs.vercel.app/reference/exposure-properties)
- [Analysis
properties](https://docs-getdbt-com-git-dbeatty-config-properties-callout-dbt-labs.vercel.app/reference/analysis-properties)
- [Macro
properties](https://docs-getdbt-com-git-dbeatty-config-properties-callout-dbt-labs.vercel.app/reference/macro-properties)

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

These changes were authored by @mirnawong1 as part of #3989.

This adds a common callout about properties vs. configs near the top of
the following pages:
- [Source
properties](https://docs.getdbt.com/reference/source-properties)
- [Exposure
properties](https://docs.getdbt.com/reference/exposure-properties)
- [Analysis
properties](https://docs.getdbt.com/reference/analysis-properties)
- [Macro properties](https://docs.getdbt.com/reference/macro-properties)

### 🎩 
When rendered, the snippet generally looks like this:

<img width="818" alt="image"
src="https://github.com/dbt-labs/docs.getdbt.com/assets/44704949/d9f8a093-94e5-40e3-a7d9-bf960c99049d">

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
and [About
versioning](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
so my content adheres to these guidelines.
- [x] I looked at the previews and everything is rendering okay

website/docs/reference/analysis-properties.md

@@ -2,7 +2,9 @@
 title: Analysis properties
 ---
 
-We recommend you define analysis properties in your `analyses/` directory, which is illustrated in the [`analysis-paths`](/reference/project-configs/analysis-paths) configuration.
+import PropsCallout from '/snippets/_config-prop-callout.md';
+
+We recommend you define analysis properties in your `analyses/` directory, which is illustrated in the [`analysis-paths`](/reference/project-configs/analysis-paths) configuration. <PropsCallout title={frontMatter.title}/>  <br /> 
 
 You can name these files `whatever_you_want.yml`, and nest them arbitrarily deeply in subfolders within the `analyses/` or `models/` directory.
 

website/docs/reference/exposure-properties.md

@@ -8,7 +8,11 @@ description: "Read this guide to understand exposure properties in dbt."
 - [Declaring resource properties](/reference/configs-and-properties)
 
 ## Overview
-Exposures are defined in `.yml` files nested under an `exposures:` key. You may define `exposures` in YAML files that also define define `sources` or `models`.
+
+import PropsCallout from '/snippets/_config-prop-callout.md';
+
+Exposures are defined in `properties.yml` files nested under an `exposures:` key. You may define `exposures` in YAML files that also define `sources` or `models`. <PropsCallout title={frontMatter.title}/>  <br /> 
+
 
 You can name these files `whatever_you_want.yml`, and nest them arbitrarily deeply in subfolders within the `models/` directory.
 

website/docs/reference/macro-properties.md

@@ -1,10 +1,13 @@
 ---
 title: Macro properties
+id: macro-properties
 ---
 
-Macro properties can be declared in `.yml` files.
+import PropsCallout from '/snippets/_config-prop-callout.md';
 
-You can name these files `whatever_you_want.yml`, and nest them arbitrarily deeply in subfolders.
+Macro properties can be declared in any `properties.yml` file. <PropsCallout title={frontMatter.title}/> 
+
+You can name these files `whatever_you_want.yml` and nest them arbitrarily deep in sub-folders.
 
 <File name='macros/<filename>.yml'>
 

website/docs/reference/source-properties.md

@@ -8,9 +8,13 @@ description: "Learn how to use source properties in dbt."
 - [Declaring resource properties](/reference/configs-and-properties)
 
 ## Overview
-Source properties can be declared in `.yml` files in your `models/` directory (as defined by the [`model-paths` config](/reference/project-configs/model-paths)).
 
-You can name these files `whatever_you_want.yml`, and nest them arbitrarily deeply in subfolders within the `models/` directory.
+import PropsCallout from '/snippets/_config-prop-callout.md';
+
+Source properties can be declared in any `properties.yml` file in your `models/` directory (as defined by the [`model-paths` config](/reference/project-configs/model-paths)). <PropsCallout title={frontMatter.title}/>  <br /> 
+
+
+You can name these files `whatever_you_want.yml`, and nest them arbitrarily deeply in subfolders within the `models/` directory:
 
 <File name='models/<filename>.yml'>
 

website/snippets/_config-prop-callout.md

@@ -0,0 +1 @@
+<span>{props.title} are "special properties" in that you can't configure them in the <code>dbt_project.yml</code> file or using <code>config()</code> blocks. Refer to <a href="https://docs.getdbt.com/reference/configs-and-properties#which-properties-are-not-also-configs" target="_self"> Configs and properties</a> for more info.</span>