group config for semantic models (#4220)

related to: #3997
related to: #4281

## What are you changing in this pull request and why?
- Fix version blocks for other resource types
- Match the style for other resource types for
`models/semantic_models.yml`
- Fix code example in `dbt_project.yml` to refer to `semantic-models`
(since `semantic_models` won't work)
- Simplify the definition by removing an explicit listing of applicable
resource types
- rather than adding the missing ones (like seeds and semantic models)

## Other
- Opened an issue to standardize the order of code examples for
`dbt_project.yml` vs. `properties.yml`:
[#4417](#4417)
- Opened an issue to figure out: do analyses _really_ have a `group`
config?1
[#4416](#4416)
- Opened an issue to standardize on `<group_name>` instead of `finance`
in generic syntax examples
[#4418](#4418)

## 🎩

### Previews
-
[1.6](https://docs-getdbt-com-git-dbeatty-semantic-models-gro-95bd63-dbt-labs.vercel.app/reference/resource-configs/group?version=1.6)
-
[1.7](https://docs-getdbt-com-git-dbeatty-semantic-models-gro-95bd63-dbt-labs.vercel.app/reference/resource-configs/group?version=1.7)

### v1.7

<img width="500" alt="image"
src="https://github.com/dbt-labs/docs.getdbt.com/assets/44704949/73ad131a-2ec2-4e90-b04a-d9ccd41cb18f">

## Checklist
- [x] I have tested that the code examples work
- [x] I have tested that the changes look correct in the Vercel preview
- [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.

website/docs/reference/resource-configs/group.md

@@ -29,8 +29,6 @@ Support for grouping models was added in dbt Core v1.5
 
 <VersionBlock firstVersion="1.5">
 
-</VersionBlock>
-
 <File name='models/schema.yml'>
 
 ```yml
@@ -68,6 +66,8 @@ select ...
 
 </File>
 
+</VersionBlock>
+
 </TabItem>
 
 <TabItem value="seeds">
@@ -80,8 +80,6 @@ Support for grouping seeds was added in dbt Core v1.5
 
 <VersionBlock firstVersion="1.5">
 
-</VersionBlock>
-
 <File name='dbt_project.yml'>
 
 ```yml
@@ -102,6 +100,8 @@ seeds:
 
 </File>
 
+</VersionBlock>
+
 
 </TabItem>
 
@@ -115,8 +115,6 @@ Support for grouping snapshots was added in dbt Core v1.5
 
 <VersionBlock firstVersion="1.5">
 
-</VersionBlock>
-
 <File name='dbt_project.yml'>
 
 ```yml
@@ -143,6 +141,8 @@ select ...
 
 </File>
 
+</VersionBlock>
+
 
 </TabItem>
 
@@ -156,8 +156,6 @@ Support for grouping tests was added in dbt Core v1.5
 
 <VersionBlock firstVersion="1.5">
 
-</VersionBlock>
-
 <File name='dbt_project.yml'>
 
 ```yml
@@ -210,6 +208,8 @@ select ...
 
 </File>
 
+</VersionBlock>
+
 </TabItem>
 
 <TabItem value="analyses">
@@ -239,8 +239,6 @@ Support for grouping metrics was added in dbt Core v1.5
 
 <VersionBlock firstVersion="1.5">
 
-</VersionBlock>
-
 <File name='dbt_project.yml'>
 
 ```yaml
@@ -264,8 +262,11 @@ metrics:
 
 </File>
 
+</VersionBlock>
+
 </TabItem>
 
+
 <TabItem value="semantic models">
 
 <VersionBlock lastVersion="1.6">
@@ -276,37 +277,35 @@ Support for grouping semantic models has been added in dbt Core v1.7.
 
 <VersionBlock firstVersion="1.7">
 
-<File name='schema.yml'>
+<File name='models/semantic_models.yml'>
 
-```yml
+```yaml
 semantic_models:
-  - name: model_name
-    group: finance
+  - name: <semantic_model_name>
+    group: <group_name>
 
 ```
 
 </File>
 
 <File name='dbt_project.yml'>
 
-```yml
-semantic_models:
+```yaml
+semantic-models:
   [<resource-path>](resource-path):
-    +group: finance
+    [+](plus-prefix)group: <group_name>
 ```
 
 </File>
 
-The `group` configuration can be nested under the `config` key.
-
 </VersionBlock>
 
 </TabItem>
 
 </Tabs>
 
 ## Definition
-An optional configuration for grouping models, analysis, snapshots, tests, and metrics. When a resource is grouped, dbt will allow it to reference private models within the same group.
+An optional configuration for assigning a group to a resource. When a resource is grouped, dbt will allow it to reference private models within the same group.
 
 For more details on reference access between resources in groups, check out [model access](/docs/collaborate/govern/model-access#groups).